diff --git a/1_hello_world/node_0.10/binding.gyp b/1_hello_world/node_0.10/binding.gyp
deleted file mode 100644
index 39b171f3..00000000
--- a/1_hello_world/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "hello",
-      "sources": [ "hello.cc" ]
-    }
-  ]
-}
diff --git a/1_hello_world/node_0.10/hello.cc b/1_hello_world/node_0.10/hello.cc
deleted file mode 100644
index 815606b5..00000000
--- a/1_hello_world/node_0.10/hello.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <node.h>
-#include <v8.h>
-
-using namespace v8;
-
-Handle<Value> Method(const Arguments& args) {
-  HandleScope scope;
-  return scope.Close(String::New("world"));
-}
-
-void Init(Handle<Object> exports) {
-  exports->Set(String::NewSymbol("hello"),
-      FunctionTemplate::New(Method)->GetFunction());
-}
-
-NODE_MODULE(hello, Init)
diff --git a/1_hello_world/node_0.10/hello.js b/1_hello_world/node_0.10/hello.js
deleted file mode 100644
index 45cff083..00000000
--- a/1_hello_world/node_0.10/hello.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var addon = require('bindings')('hello');
-
-console.log(addon.hello()); // 'world'
\ No newline at end of file
diff --git a/1_hello_world/node_0.10/package.json b/1_hello_world/node_0.10/package.json
deleted file mode 100644
index be588dd4..00000000
--- a/1_hello_world/node_0.10/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "hello_world",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #1",
-  "main": "hello.js",
-  "private": true,
-  "scripts": {
-    "test": "node hello.js"
-  },
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/1_hello_world/node_0.12/binding.gyp b/1_hello_world/node_0.12/binding.gyp
deleted file mode 100644
index 39b171f3..00000000
--- a/1_hello_world/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "hello",
-      "sources": [ "hello.cc" ]
-    }
-  ]
-}
diff --git a/1_hello_world/node_0.12/hello.cc b/1_hello_world/node_0.12/hello.cc
deleted file mode 100644
index dbb22e77..00000000
--- a/1_hello_world/node_0.12/hello.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <node.h>
-#include <v8.h>
-
-using namespace v8;
-
-void Method(const v8::FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-  args.GetReturnValue().Set(String::NewFromUtf8(isolate, "world"));
-}
-
-void Init(Handle<Object> exports) {
-  Isolate* isolate = Isolate::GetCurrent();
-  exports->Set(String::NewFromUtf8(isolate, "hello"),
-      FunctionTemplate::New(isolate, Method)->GetFunction());
-}
-
-NODE_MODULE(hello, Init)
diff --git a/1_hello_world/node_0.12/hello.js b/1_hello_world/node_0.12/hello.js
deleted file mode 100644
index 45cff083..00000000
--- a/1_hello_world/node_0.12/hello.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var addon = require('bindings')('hello');
-
-console.log(addon.hello()); // 'world'
\ No newline at end of file
diff --git a/1_hello_world/node_0.12/package.json b/1_hello_world/node_0.12/package.json
deleted file mode 100644
index be588dd4..00000000
--- a/1_hello_world/node_0.12/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "hello_world",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #1",
-  "main": "hello.js",
-  "private": true,
-  "scripts": {
-    "test": "node hello.js"
-  },
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/2_function_arguments/node_0.10/addon.cc b/2_function_arguments/node_0.10/addon.cc
deleted file mode 100644
index fd791cbb..00000000
--- a/2_function_arguments/node_0.10/addon.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-Handle<Value> Add(const Arguments& args) {
-  HandleScope scope;
-
-  if (args.Length() < 2) {
-    ThrowException(Exception::TypeError(String::New("Wrong number of arguments")));
-    return scope.Close(Undefined());
-  }
-
-  if (!args[0]->IsNumber() || !args[1]->IsNumber()) {
-    ThrowException(Exception::TypeError(String::New("Wrong arguments")));
-    return scope.Close(Undefined());
-  }
-
-  double arg0 = args[0]->NumberValue();
-  double arg1 = args[1]->NumberValue();
-  Local<Number> num = Number::New(arg0 + arg1);
-
-  return scope.Close(num);
-}
-
-void Init(Handle<Object> exports) {
-  exports->Set(String::NewSymbol("add"),
-      FunctionTemplate::New(Add)->GetFunction());
-}
-
-NODE_MODULE(addon, Init)
diff --git a/2_function_arguments/node_0.10/addon.js b/2_function_arguments/node_0.10/addon.js
deleted file mode 100644
index 14fc6dd8..00000000
--- a/2_function_arguments/node_0.10/addon.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var addon = require('bindings')('addon.node')
-
-console.log('This should be eight:', addon.add(3, 5))
\ No newline at end of file
diff --git a/2_function_arguments/node_0.10/binding.gyp b/2_function_arguments/node_0.10/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/2_function_arguments/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/2_function_arguments/node_0.10/package.json b/2_function_arguments/node_0.10/package.json
deleted file mode 100644
index 8d7c0769..00000000
--- a/2_function_arguments/node_0.10/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "function_arguments",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #2",
-  "main": "addon.js",
-  "private": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  },
-  "scripts": {
-    "test": "node addon.js"
-  },
-  "gypfile": true
-}
\ No newline at end of file
diff --git a/2_function_arguments/node_0.12/addon.cc b/2_function_arguments/node_0.12/addon.cc
deleted file mode 100644
index 368598db..00000000
--- a/2_function_arguments/node_0.12/addon.cc
+++ /dev/null
@@ -1,31 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-void Add(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  if (args.Length() < 2) {
-    isolate->ThrowException(Exception::TypeError(
-        String::NewFromUtf8(isolate, "Wrong number of arguments")));
-    return;
-  }
-
-  if (!args[0]->IsNumber() || !args[1]->IsNumber()) {
-    isolate->ThrowException(Exception::TypeError(
-        String::NewFromUtf8(isolate, "Wrong arguments")));
-    return;
-  }
-
-  double value = args[0]->NumberValue() + args[1]->NumberValue();
-  Local<Number> num = Number::New(isolate, value);
-
-  args.GetReturnValue().Set(num);
-}
-
-void Init(Handle<Object> exports) {
-  NODE_SET_METHOD(exports, "add", Add);
-}
-
-NODE_MODULE(addon, Init)
diff --git a/2_function_arguments/node_0.12/addon.js b/2_function_arguments/node_0.12/addon.js
deleted file mode 100644
index 14fc6dd8..00000000
--- a/2_function_arguments/node_0.12/addon.js
+++ /dev/null
@@ -1,3 +0,0 @@
-var addon = require('bindings')('addon.node')
-
-console.log('This should be eight:', addon.add(3, 5))
\ No newline at end of file
diff --git a/2_function_arguments/node_0.12/binding.gyp b/2_function_arguments/node_0.12/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/2_function_arguments/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/2_function_arguments/node_0.12/package.json b/2_function_arguments/node_0.12/package.json
deleted file mode 100644
index 4ca65df5..00000000
--- a/2_function_arguments/node_0.12/package.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "name": "function_arguments",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #2",
-  "main": "addon.js",
-  "private": true,
-  "dependencies": {
-    "bindings": "~1.2.1",
-    "nan": "~1.3.0"
-  },
-  "scripts": {
-    "test": "node addon.js"
-  },
-  "gypfile": true
-}
diff --git a/3_callbacks/node_0.10/addon.cc b/3_callbacks/node_0.10/addon.cc
deleted file mode 100644
index 58e05793..00000000
--- a/3_callbacks/node_0.10/addon.cc
+++ /dev/null
@@ -1,21 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-Handle<Value> RunCallback(const Arguments& args) {
-  HandleScope scope;
-
-  Local<Function> cb = Local<Function>::Cast(args[0]);
-  const unsigned argc = 1;
-  Local<Value> argv[argc] = { Local<Value>::New(String::New("hello world")) };
-  cb->Call(Context::GetCurrent()->Global(), argc, argv);
-
-  return scope.Close(Undefined());
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  module->Set(String::NewSymbol("exports"),
-      FunctionTemplate::New(RunCallback)->GetFunction());
-}
-
-NODE_MODULE(addon, Init)
diff --git a/3_callbacks/node_0.10/addon.js b/3_callbacks/node_0.10/addon.js
deleted file mode 100644
index 1839c204..00000000
--- a/3_callbacks/node_0.10/addon.js
+++ /dev/null
@@ -1,5 +0,0 @@
-var addon = require('bindings')('addon');
-
-addon(function(msg){
-  console.log(msg); // 'hello world'
-});
\ No newline at end of file
diff --git a/3_callbacks/node_0.10/binding.gyp b/3_callbacks/node_0.10/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/3_callbacks/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/3_callbacks/node_0.10/package.json b/3_callbacks/node_0.10/package.json
deleted file mode 100644
index 18250d5d..00000000
--- a/3_callbacks/node_0.10/package.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "name": "callbacks",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #3",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1",
-    "nan": "~1.3.0"
-  }
-}
diff --git a/3_callbacks/node_0.12/addon.cc b/3_callbacks/node_0.12/addon.cc
deleted file mode 100644
index bb714b80..00000000
--- a/3_callbacks/node_0.12/addon.cc
+++ /dev/null
@@ -1,19 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-void RunCallback(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  Local<Function> cb = Local<Function>::Cast(args[0]);
-  const unsigned argc = 1;
-  Local<Value> argv[argc] = { String::NewFromUtf8(isolate, "hello world") };
-  cb->Call(isolate->GetCurrentContext()->Global(), argc, argv);
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  NODE_SET_METHOD(module, "exports", RunCallback);
-}
-
-NODE_MODULE(addon, Init)
diff --git a/3_callbacks/node_0.12/addon.js b/3_callbacks/node_0.12/addon.js
deleted file mode 100644
index 1839c204..00000000
--- a/3_callbacks/node_0.12/addon.js
+++ /dev/null
@@ -1,5 +0,0 @@
-var addon = require('bindings')('addon');
-
-addon(function(msg){
-  console.log(msg); // 'hello world'
-});
\ No newline at end of file
diff --git a/3_callbacks/node_0.12/binding.gyp b/3_callbacks/node_0.12/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/3_callbacks/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/3_callbacks/node_0.12/package.json b/3_callbacks/node_0.12/package.json
deleted file mode 100644
index 4de7ece7..00000000
--- a/3_callbacks/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "callbacks",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #3",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/4_object_factory/node_0.10/addon.cc b/4_object_factory/node_0.10/addon.cc
deleted file mode 100644
index 93bc44b1..00000000
--- a/4_object_factory/node_0.10/addon.cc
+++ /dev/null
@@ -1,19 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-Handle<Value> CreateObject(const Arguments& args) {
-  HandleScope scope;
-
-  Local<Object> obj = Object::New();
-  obj->Set(String::NewSymbol("msg"), args[0]->ToString());
-
-  return scope.Close(obj);
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  module->Set(String::NewSymbol("exports"),
-      FunctionTemplate::New(CreateObject)->GetFunction());
-}
-
-NODE_MODULE(addon, Init)
diff --git a/4_object_factory/node_0.10/addon.js b/4_object_factory/node_0.10/addon.js
deleted file mode 100644
index b6c4dafc..00000000
--- a/4_object_factory/node_0.10/addon.js
+++ /dev/null
@@ -1,5 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj1 = addon('hello');
-var obj2 = addon('world');
-console.log(obj1.msg+' '+obj2.msg); // 'hello world'
\ No newline at end of file
diff --git a/4_object_factory/node_0.10/binding.gyp b/4_object_factory/node_0.10/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/4_object_factory/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/4_object_factory/node_0.10/package.json b/4_object_factory/node_0.10/package.json
deleted file mode 100644
index ce8cfceb..00000000
--- a/4_object_factory/node_0.10/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "object_factory",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #4",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/4_object_factory/node_0.12/addon.cc b/4_object_factory/node_0.12/addon.cc
deleted file mode 100644
index 413b8ac6..00000000
--- a/4_object_factory/node_0.12/addon.cc
+++ /dev/null
@@ -1,20 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-void CreateObject(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  Local<Object> obj = Object::New(isolate);
-  obj->Set(String::NewFromUtf8(isolate, "msg"), args[0]->ToString());
-
-  args.GetReturnValue().Set(obj);
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  NODE_SET_METHOD(module, "exports", CreateObject);
-}
-
-NODE_MODULE(addon, Init)
-  
\ No newline at end of file
diff --git a/4_object_factory/node_0.12/addon.js b/4_object_factory/node_0.12/addon.js
deleted file mode 100644
index b6c4dafc..00000000
--- a/4_object_factory/node_0.12/addon.js
+++ /dev/null
@@ -1,5 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj1 = addon('hello');
-var obj2 = addon('world');
-console.log(obj1.msg+' '+obj2.msg); // 'hello world'
\ No newline at end of file
diff --git a/4_object_factory/node_0.12/binding.gyp b/4_object_factory/node_0.12/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/4_object_factory/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/4_object_factory/node_0.12/package.json b/4_object_factory/node_0.12/package.json
deleted file mode 100644
index ce8cfceb..00000000
--- a/4_object_factory/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "object_factory",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #4",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/5_function_factory/node_0.10/addon.cc b/5_function_factory/node_0.10/addon.cc
deleted file mode 100644
index 8bc40679..00000000
--- a/5_function_factory/node_0.10/addon.cc
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-Handle<Value> MyFunction(const Arguments& args) {
-  HandleScope scope;
-  return scope.Close(String::New("hello world"));
-}
-
-Handle<Value> CreateFunction(const Arguments& args) {
-  HandleScope scope;
-
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(MyFunction);
-  Local<Function> fn = tpl->GetFunction();
-  fn->SetName(String::NewSymbol("theFunction")); // omit this to make it anonymous
-
-  return scope.Close(fn);
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  module->Set(String::NewSymbol("exports"),
-      FunctionTemplate::New(CreateFunction)->GetFunction());
-}
-
-NODE_MODULE(addon, Init)
diff --git a/5_function_factory/node_0.10/addon.js b/5_function_factory/node_0.10/addon.js
deleted file mode 100644
index f5a7f96c..00000000
--- a/5_function_factory/node_0.10/addon.js
+++ /dev/null
@@ -1,4 +0,0 @@
-var addon = require('bindings')('addon');
-
-var fn = addon();
-console.log(fn()); // 'hello world'
\ No newline at end of file
diff --git a/5_function_factory/node_0.10/binding.gyp b/5_function_factory/node_0.10/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/5_function_factory/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/5_function_factory/node_0.10/package.json b/5_function_factory/node_0.10/package.json
deleted file mode 100644
index 22f06fb0..00000000
--- a/5_function_factory/node_0.10/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "function_factory",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #5",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/5_function_factory/node_0.12/addon.cc b/5_function_factory/node_0.12/addon.cc
deleted file mode 100644
index f4756022..00000000
--- a/5_function_factory/node_0.12/addon.cc
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <node.h>
-
-using namespace v8;
-
-void MyFunction(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-  args.GetReturnValue().Set(String::NewFromUtf8(isolate, "hello world"));
-}
-
-void CreateFunction(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, MyFunction);
-  Local<Function> fn = tpl->GetFunction();
-
-  // omit this to make it anonymous
-  fn->SetName(String::NewFromUtf8(isolate, "theFunction"));
-
-  args.GetReturnValue().Set(fn);
-}
-
-void Init(Handle<Object> exports, Handle<Object> module) {
-  NODE_SET_METHOD(module, "exports", CreateFunction);
-}
-
-NODE_MODULE(addon, Init)
diff --git a/5_function_factory/node_0.12/addon.js b/5_function_factory/node_0.12/addon.js
deleted file mode 100644
index f5a7f96c..00000000
--- a/5_function_factory/node_0.12/addon.js
+++ /dev/null
@@ -1,4 +0,0 @@
-var addon = require('bindings')('addon');
-
-var fn = addon();
-console.log(fn()); // 'hello world'
\ No newline at end of file
diff --git a/5_function_factory/node_0.12/binding.gyp b/5_function_factory/node_0.12/binding.gyp
deleted file mode 100644
index 3c79ca84..00000000
--- a/5_function_factory/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc" ]
-    }
-  ]
-}
diff --git a/5_function_factory/node_0.12/package.json b/5_function_factory/node_0.12/package.json
deleted file mode 100644
index 22f06fb0..00000000
--- a/5_function_factory/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "function_factory",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #5",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/6_object_wrap/node_0.10/addon.cc b/6_object_wrap/node_0.10/addon.cc
deleted file mode 100644
index 7da0bf0a..00000000
--- a/6_object_wrap/node_0.10/addon.cc
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-void InitAll(Handle<Object> exports) {
-  MyObject::Init(exports);
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/6_object_wrap/node_0.10/addon.js b/6_object_wrap/node_0.10/addon.js
deleted file mode 100644
index d7dd6e0a..00000000
--- a/6_object_wrap/node_0.10/addon.js
+++ /dev/null
@@ -1,13 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj = new addon.MyObject(10);
-console.log( obj.plusOne() ); // 11
-console.log( obj.plusOne() ); // 12
-console.log( obj.plusOne() ); // 13
-
-console.log( obj.multiply().value() ); // 13
-console.log( obj.multiply(10).value() ); // 130
-
-var newobj = obj.multiply(-1);
-console.log( newobj.value() ); // -13
-console.log( obj === newobj ); // false
diff --git a/6_object_wrap/node_0.10/binding.gyp b/6_object_wrap/node_0.10/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/6_object_wrap/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/6_object_wrap/node_0.10/myobject.cc b/6_object_wrap/node_0.10/myobject.cc
deleted file mode 100644
index da52ea4a..00000000
--- a/6_object_wrap/node_0.10/myobject.cc
+++ /dev/null
@@ -1,62 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-Persistent<Function> MyObject::constructor;
-
-MyObject::MyObject() {};
-MyObject::~MyObject() {};
-
-void MyObject::Init(Handle<Object> target) {
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(New);
-  tpl->SetClassName(String::NewSymbol("MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-  // Prototype
-  NODE_SET_PROTOTYPE_METHOD(tpl, "value", GetValue);
-  NODE_SET_PROTOTYPE_METHOD(tpl, "plusOne", PlusOne);
-  NODE_SET_PROTOTYPE_METHOD(tpl, "multiply", Multiply);
-
-  constructor = Persistent<Function>::New(tpl->GetFunction());
-  target->Set(String::NewSymbol("MyObject"), constructor);
-}
-
-Handle<Value> MyObject::New(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = new MyObject();
-  obj->value_ = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-  obj->Wrap(args.This());
-
-  return args.This();
-}
-
-Handle<Value> MyObject::GetValue(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
-
-  return scope.Close(Number::New(obj->value_));
-}
-
-Handle<Value> MyObject::PlusOne(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.This());
-  obj->value_ += 1;
-
-  return scope.Close(Number::New(obj->value_));
-}
-
-Handle<Value> MyObject::Multiply(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.This());
-  double multiple = args[0]->IsUndefined() ? 1 : args[0]->NumberValue();
-
-  const int argc = 1;
-  Local<Value> argv[argc] = { Number::New(obj->value_ * multiple) };
-
-  return scope.Close(constructor->NewInstance(argc, argv));
-}
diff --git a/6_object_wrap/node_0.10/myobject.h b/6_object_wrap/node_0.10/myobject.h
deleted file mode 100644
index a779a961..00000000
--- a/6_object_wrap/node_0.10/myobject.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init(v8::Handle<v8::Object> target);
-
- private:
-  MyObject();
-  ~MyObject();
-
-  static v8::Handle<v8::Value> New(const v8::Arguments& args);
-  static v8::Handle<v8::Value> GetValue(const v8::Arguments& args);
-  static v8::Handle<v8::Value> PlusOne(const v8::Arguments& args);
-  static v8::Handle<v8::Value> Multiply(const v8::Arguments& args);
-  static v8::Persistent<v8::Function> constructor;
-  double value_;
-};
-
-#endif
diff --git a/6_object_wrap/node_0.10/package.json b/6_object_wrap/node_0.10/package.json
deleted file mode 100644
index 162c5861..00000000
--- a/6_object_wrap/node_0.10/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "object_wrap",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #6",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/6_object_wrap/node_0.12/addon.cc b/6_object_wrap/node_0.12/addon.cc
deleted file mode 100644
index 7da0bf0a..00000000
--- a/6_object_wrap/node_0.12/addon.cc
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-void InitAll(Handle<Object> exports) {
-  MyObject::Init(exports);
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/6_object_wrap/node_0.12/addon.js b/6_object_wrap/node_0.12/addon.js
deleted file mode 100644
index bcd13086..00000000
--- a/6_object_wrap/node_0.12/addon.js
+++ /dev/null
@@ -1,6 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj = new addon.MyObject(10);
-console.log( obj.plusOne() ); // 11
-console.log( obj.plusOne() ); // 12
-console.log( obj.plusOne() ); // 13
\ No newline at end of file
diff --git a/6_object_wrap/node_0.12/binding.gyp b/6_object_wrap/node_0.12/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/6_object_wrap/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/6_object_wrap/node_0.12/myobject.cc b/6_object_wrap/node_0.12/myobject.cc
deleted file mode 100644
index e11fd90a..00000000
--- a/6_object_wrap/node_0.12/myobject.cc
+++ /dev/null
@@ -1,77 +0,0 @@
-#include "myobject.h"
-
-using namespace v8;
-
-Persistent<Function> MyObject::constructor;
-
-MyObject::MyObject(double value) : value_(value) {
-}
-
-MyObject::~MyObject() {
-}
-
-void MyObject::Init(Handle<Object> exports) {
-  Isolate* isolate = Isolate::GetCurrent();
-
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, New);
-  tpl->SetClassName(String::NewFromUtf8(isolate, "MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-
-  // Prototype
-  NODE_SET_PROTOTYPE_METHOD(tpl, "plusOne", PlusOne);
-
-  constructor.Reset(isolate, tpl->GetFunction());
-  exports->Set(String::NewFromUtf8(isolate, "MyObject"),
-               tpl->GetFunction());
-}
-
-void MyObject::New(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  if (args.IsConstructCall()) {
-    // Invoked as constructor: `new MyObject(...)`
-    double value = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-    MyObject* obj = new MyObject(value);
-    obj->Wrap(args.This());
-    args.GetReturnValue().Set(args.This());
-  } else {
-    // Invoked as plain function `MyObject(...)`, turn into construct call.
-    const int argc = 1;
-    Local<Value> argv[argc] = { args[0] };
-    Local<Function> cons = Local<Function>::New(isolate, constructor);
-    args.GetReturnValue().Set(cons->NewInstance(argc, argv));
-  }
-}
-
-void MyObject::GetValue(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
-  args.GetReturnValue().Set(Number::New(isolate, obj->value_));
-}
-
-void MyObject::PlusOne(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
-  obj->value_ += 1;
-
-  args.GetReturnValue().Set(Number::New(isolate, obj->value_));
-}
-
-void MyObject::Multiply(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
-  double multiple = args[0]->IsUndefined() ? 1 : args[0]->NumberValue();
-
-  const int argc = 1;
-  Local<Value> argv[argc] = { Number::New(isolate, obj->value_ * multiple) };
-
-  Local<Function> cons = Local<Function>::New(isolate, constructor);
-  args.GetReturnValue().Set(cons->NewInstance(argc, argv));
-}
diff --git a/6_object_wrap/node_0.12/myobject.h b/6_object_wrap/node_0.12/myobject.h
deleted file mode 100644
index 196e0e08..00000000
--- a/6_object_wrap/node_0.12/myobject.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-#include <node_object_wrap.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init(v8::Handle<v8::Object> exports);
-
- private:
-  explicit MyObject(double value = 0);
-  ~MyObject();
-
-  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void GetValue(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void PlusOne(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void Multiply(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static v8::Persistent<v8::Function> constructor;
-  double value_;
-};
-
-#endif
diff --git a/6_object_wrap/node_0.12/package.json b/6_object_wrap/node_0.12/package.json
deleted file mode 100644
index 162c5861..00000000
--- a/6_object_wrap/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "object_wrap",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #6",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/7_factory_wrap/node_0.10/addon.cc b/7_factory_wrap/node_0.10/addon.cc
deleted file mode 100644
index 5e1f10c0..00000000
--- a/7_factory_wrap/node_0.10/addon.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-Handle<Value> CreateObject(const Arguments& args) {
-  HandleScope scope;
-  return scope.Close(MyObject::NewInstance(args));
-}
-
-void InitAll(Handle<Object> exports, Handle<Object> module) {
-  MyObject::Init();
-
-  module->Set(String::NewSymbol("exports"),
-      FunctionTemplate::New(CreateObject)->GetFunction());
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/7_factory_wrap/node_0.10/addon.js b/7_factory_wrap/node_0.10/addon.js
deleted file mode 100644
index 13f7c9d5..00000000
--- a/7_factory_wrap/node_0.10/addon.js
+++ /dev/null
@@ -1,11 +0,0 @@
-var createObject = require('bindings')('addon');
-
-var obj = createObject(10);
-console.log( obj.plusOne() ); // 11
-console.log( obj.plusOne() ); // 12
-console.log( obj.plusOne() ); // 13
-
-var obj2 = createObject(20);
-console.log( obj2.plusOne() ); // 21
-console.log( obj2.plusOne() ); // 22
-console.log( obj2.plusOne() ); // 23
diff --git a/7_factory_wrap/node_0.10/binding.gyp b/7_factory_wrap/node_0.10/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/7_factory_wrap/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/7_factory_wrap/node_0.10/myobject.cc b/7_factory_wrap/node_0.10/myobject.cc
deleted file mode 100644
index 3cb007c6..00000000
--- a/7_factory_wrap/node_0.10/myobject.cc
+++ /dev/null
@@ -1,50 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-MyObject::MyObject() {};
-MyObject::~MyObject() {};
-
-Persistent<Function> MyObject::constructor;
-
-void MyObject::Init() {
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(New);
-  tpl->SetClassName(String::NewSymbol("MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-  // Prototype
-  tpl->PrototypeTemplate()->Set(String::NewSymbol("plusOne"),
-      FunctionTemplate::New(PlusOne)->GetFunction());
-
-  constructor = Persistent<Function>::New(tpl->GetFunction());
-}
-
-Handle<Value> MyObject::New(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = new MyObject();
-  obj->counter_ = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-  obj->Wrap(args.This());
-
-  return args.This();
-}
-
-Handle<Value> MyObject::NewInstance(const Arguments& args) {
-  HandleScope scope;
-
-  const unsigned argc = 1;
-  Handle<Value> argv[argc] = { args[0] };
-  Local<Object> instance = constructor->NewInstance(argc, argv);
-
-  return scope.Close(instance);
-}
-
-Handle<Value> MyObject::PlusOne(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.This());
-  obj->counter_ += 1;
-
-  return scope.Close(Number::New(obj->counter_));
-}
diff --git a/7_factory_wrap/node_0.10/myobject.h b/7_factory_wrap/node_0.10/myobject.h
deleted file mode 100644
index 99e7357f..00000000
--- a/7_factory_wrap/node_0.10/myobject.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init();
-  static v8::Handle<v8::Value> NewInstance(const v8::Arguments& args);
-
- private:
-  MyObject();
-  ~MyObject();
-
-  static v8::Persistent<v8::Function> constructor;
-  static v8::Handle<v8::Value> New(const v8::Arguments& args);
-  static v8::Handle<v8::Value> PlusOne(const v8::Arguments& args);
-  double counter_;
-};
-
-#endif
diff --git a/7_factory_wrap/node_0.10/package.json b/7_factory_wrap/node_0.10/package.json
deleted file mode 100644
index 70fac90e..00000000
--- a/7_factory_wrap/node_0.10/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "factory_wrap",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #7",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/7_factory_wrap/node_0.12/addon.cc b/7_factory_wrap/node_0.12/addon.cc
deleted file mode 100644
index 263e497c..00000000
--- a/7_factory_wrap/node_0.12/addon.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-void CreateObject(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-  MyObject::NewInstance(args);
-}
-
-void InitAll(Handle<Object> exports, Handle<Object> module) {
-  MyObject::Init();
-
-  NODE_SET_METHOD(module, "exports", CreateObject);
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/7_factory_wrap/node_0.12/addon.js b/7_factory_wrap/node_0.12/addon.js
deleted file mode 100644
index 13f7c9d5..00000000
--- a/7_factory_wrap/node_0.12/addon.js
+++ /dev/null
@@ -1,11 +0,0 @@
-var createObject = require('bindings')('addon');
-
-var obj = createObject(10);
-console.log( obj.plusOne() ); // 11
-console.log( obj.plusOne() ); // 12
-console.log( obj.plusOne() ); // 13
-
-var obj2 = createObject(20);
-console.log( obj2.plusOne() ); // 21
-console.log( obj2.plusOne() ); // 22
-console.log( obj2.plusOne() ); // 23
diff --git a/7_factory_wrap/node_0.12/binding.gyp b/7_factory_wrap/node_0.12/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/7_factory_wrap/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/7_factory_wrap/node_0.12/myobject.cc b/7_factory_wrap/node_0.12/myobject.cc
deleted file mode 100644
index 6b5cce9a..00000000
--- a/7_factory_wrap/node_0.12/myobject.cc
+++ /dev/null
@@ -1,66 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-Persistent<Function> MyObject::constructor;
-
-MyObject::MyObject(double value) : value_(value) {
-}
-
-MyObject::~MyObject() {
-}
-
-void MyObject::Init() {
-  Isolate* isolate = Isolate::GetCurrent();
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, New);
-  tpl->SetClassName(String::NewFromUtf8(isolate, "MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-
-  // Prototype
-  NODE_SET_PROTOTYPE_METHOD(tpl, "plusOne", PlusOne);
-
-  constructor.Reset(isolate, tpl->GetFunction());
-}
-
-void MyObject::New(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  if (args.IsConstructCall()) {
-    // Invoked as constructor: `new MyObject(...)`
-    double value = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-    MyObject* obj = new MyObject(value);
-    obj->Wrap(args.This());
-    args.GetReturnValue().Set(args.This());
-  } else {
-    // Invoked as plain function `MyObject(...)`, turn into construct call.
-    const int argc = 1;
-    Local<Value> argv[argc] = { args[0] };
-    Local<Function> cons = Local<Function>::New(isolate, constructor);
-    args.GetReturnValue().Set(cons->NewInstance(argc, argv));
-  }
-}
-
-void MyObject::NewInstance(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  const unsigned argc = 1;
-  Handle<Value> argv[argc] = { args[0] };
-  Local<Function> cons = Local<Function>::New(isolate, constructor);
-  Local<Object> instance = cons->NewInstance(argc, argv);
-
-  args.GetReturnValue().Set(instance);
-}
-
-void MyObject::PlusOne(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  MyObject* obj = ObjectWrap::Unwrap<MyObject>(args.Holder());
-  obj->value_ += 1;
-
-  args.GetReturnValue().Set(Number::New(isolate, obj->value_));
-}
diff --git a/7_factory_wrap/node_0.12/myobject.h b/7_factory_wrap/node_0.12/myobject.h
deleted file mode 100644
index b22df1e2..00000000
--- a/7_factory_wrap/node_0.12/myobject.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-#include <node_object_wrap.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init();
-  static void NewInstance(const v8::FunctionCallbackInfo<v8::Value>& args);
-
- private:
-  explicit MyObject(double value = 0);
-  ~MyObject();
-
-  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void PlusOne(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static v8::Persistent<v8::Function> constructor;
-  double value_;
-};
-
-#endif
diff --git a/7_factory_wrap/node_0.12/package.json b/7_factory_wrap/node_0.12/package.json
deleted file mode 100644
index 70fac90e..00000000
--- a/7_factory_wrap/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "factory_wrap",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #7",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/8_passing_wrapped/node_0.10/addon.cc b/8_passing_wrapped/node_0.10/addon.cc
deleted file mode 100644
index 4b97cdd1..00000000
--- a/8_passing_wrapped/node_0.10/addon.cc
+++ /dev/null
@@ -1,33 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-Handle<Value> CreateObject(const Arguments& args) {
-  HandleScope scope;
-  return scope.Close(MyObject::NewInstance(args));
-}
-
-Handle<Value> Add(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj1 = node::ObjectWrap::Unwrap<MyObject>(
-      args[0]->ToObject());
-  MyObject* obj2 = node::ObjectWrap::Unwrap<MyObject>(
-      args[1]->ToObject());
-
-  double sum = obj1->Val() + obj2->Val();
-  return scope.Close(Number::New(sum));
-}
-
-void InitAll(Handle<Object> exports) {
-  MyObject::Init();
-
-  exports->Set(String::NewSymbol("createObject"),
-      FunctionTemplate::New(CreateObject)->GetFunction());
-
-  exports->Set(String::NewSymbol("add"),
-      FunctionTemplate::New(Add)->GetFunction());
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/8_passing_wrapped/node_0.10/addon.js b/8_passing_wrapped/node_0.10/addon.js
deleted file mode 100644
index 7667d1ff..00000000
--- a/8_passing_wrapped/node_0.10/addon.js
+++ /dev/null
@@ -1,7 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj1 = addon.createObject(10);
-var obj2 = addon.createObject(20);
-var result = addon.add(obj1, obj2);
-
-console.log(result); // 30
diff --git a/8_passing_wrapped/node_0.10/binding.gyp b/8_passing_wrapped/node_0.10/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/8_passing_wrapped/node_0.10/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/8_passing_wrapped/node_0.10/myobject.cc b/8_passing_wrapped/node_0.10/myobject.cc
deleted file mode 100644
index 1c518aeb..00000000
--- a/8_passing_wrapped/node_0.10/myobject.cc
+++ /dev/null
@@ -1,38 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-MyObject::MyObject() {};
-MyObject::~MyObject() {};
-
-Persistent<Function> MyObject::constructor;
-
-void MyObject::Init() {
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(New);
-  tpl->SetClassName(String::NewSymbol("MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-
-  constructor = Persistent<Function>::New(tpl->GetFunction());
-}
-
-Handle<Value> MyObject::New(const Arguments& args) {
-  HandleScope scope;
-
-  MyObject* obj = new MyObject();
-  obj->val_ = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-  obj->Wrap(args.This());
-
-  return args.This();
-}
-
-Handle<Value> MyObject::NewInstance(const Arguments& args) {
-  HandleScope scope;
-
-  const unsigned argc = 1;
-  Handle<Value> argv[argc] = { args[0] };
-  Local<Object> instance = constructor->NewInstance(argc, argv);
-
-  return scope.Close(instance);
-}
diff --git a/8_passing_wrapped/node_0.10/myobject.h b/8_passing_wrapped/node_0.10/myobject.h
deleted file mode 100644
index 317bd6ff..00000000
--- a/8_passing_wrapped/node_0.10/myobject.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init();
-  static v8::Handle<v8::Value> NewInstance(const v8::Arguments& args);
-  double Val() const { return val_; }
-
- private:
-  MyObject();
-  ~MyObject();
-
-  static v8::Persistent<v8::Function> constructor;
-  static v8::Handle<v8::Value> New(const v8::Arguments& args);
-  double val_;
-};
-
-#endif
diff --git a/8_passing_wrapped/node_0.10/package.json b/8_passing_wrapped/node_0.10/package.json
deleted file mode 100644
index 5c446be0..00000000
--- a/8_passing_wrapped/node_0.10/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "passing_wrapped",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #8",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}
diff --git a/8_passing_wrapped/node_0.12/addon.cc b/8_passing_wrapped/node_0.12/addon.cc
deleted file mode 100644
index f7b02738..00000000
--- a/8_passing_wrapped/node_0.12/addon.cc
+++ /dev/null
@@ -1,33 +0,0 @@
-#include <node.h>
-#include <node_object_wrap.h>
-#include "myobject.h"
-
-using namespace v8;
-
-void CreateObject(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-  MyObject::NewInstance(args);
-}
-
-void Add(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  MyObject* obj1 = node::ObjectWrap::Unwrap<MyObject>(
-      args[0]->ToObject());
-  MyObject* obj2 = node::ObjectWrap::Unwrap<MyObject>(
-      args[1]->ToObject());
-
-  double sum = obj1->value() + obj2->value();
-  args.GetReturnValue().Set(Number::New(isolate, sum));
-}
-
-void InitAll(Handle<Object> exports) {
-  MyObject::Init();
-
-  NODE_SET_METHOD(exports, "createObject", CreateObject);
-  NODE_SET_METHOD(exports, "add", Add);
-}
-
-NODE_MODULE(addon, InitAll)
diff --git a/8_passing_wrapped/node_0.12/addon.js b/8_passing_wrapped/node_0.12/addon.js
deleted file mode 100644
index 7667d1ff..00000000
--- a/8_passing_wrapped/node_0.12/addon.js
+++ /dev/null
@@ -1,7 +0,0 @@
-var addon = require('bindings')('addon');
-
-var obj1 = addon.createObject(10);
-var obj2 = addon.createObject(20);
-var result = addon.add(obj1, obj2);
-
-console.log(result); // 30
diff --git a/8_passing_wrapped/node_0.12/binding.gyp b/8_passing_wrapped/node_0.12/binding.gyp
deleted file mode 100644
index b05e7abc..00000000
--- a/8_passing_wrapped/node_0.12/binding.gyp
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "targets": [
-    {
-      "target_name": "addon",
-      "sources": [ "addon.cc", "myobject.cc" ]
-    }
-  ]
-}
diff --git a/8_passing_wrapped/node_0.12/myobject.cc b/8_passing_wrapped/node_0.12/myobject.cc
deleted file mode 100644
index 4d347d2d..00000000
--- a/8_passing_wrapped/node_0.12/myobject.cc
+++ /dev/null
@@ -1,54 +0,0 @@
-#include <node.h>
-#include "myobject.h"
-
-using namespace v8;
-
-Persistent<Function> MyObject::constructor;
-
-MyObject::MyObject(double value) : value_(value) {
-}
-
-MyObject::~MyObject() {
-}
-
-void MyObject::Init() {
-  Isolate* isolate = Isolate::GetCurrent();
-
-  // Prepare constructor template
-  Local<FunctionTemplate> tpl = FunctionTemplate::New(isolate, New);
-  tpl->SetClassName(String::NewFromUtf8(isolate, "MyObject"));
-  tpl->InstanceTemplate()->SetInternalFieldCount(1);
-
-  constructor.Reset(isolate, tpl->GetFunction());
-}
-
-void MyObject::New(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  if (args.IsConstructCall()) {
-    // Invoked as constructor: `new MyObject(...)`
-    double value = args[0]->IsUndefined() ? 0 : args[0]->NumberValue();
-    MyObject* obj = new MyObject(value);
-    obj->Wrap(args.This());
-    args.GetReturnValue().Set(args.This());
-  } else {
-    // Invoked as plain function `MyObject(...)`, turn into construct call.
-    const int argc = 1;
-    Local<Value> argv[argc] = { args[0] };
-    Local<Function> cons = Local<Function>::New(isolate, constructor);
-    args.GetReturnValue().Set(cons->NewInstance(argc, argv));
-  }
-}
-
-void MyObject::NewInstance(const FunctionCallbackInfo<Value>& args) {
-  Isolate* isolate = Isolate::GetCurrent();
-  HandleScope scope(isolate);
-
-  const unsigned argc = 1;
-  Handle<Value> argv[argc] = { args[0] };
-  Local<Function> cons = Local<Function>::New(isolate, constructor);
-  Local<Object> instance = cons->NewInstance(argc, argv);
-
-  args.GetReturnValue().Set(instance);
-}
diff --git a/8_passing_wrapped/node_0.12/myobject.h b/8_passing_wrapped/node_0.12/myobject.h
deleted file mode 100644
index 4c32ef75..00000000
--- a/8_passing_wrapped/node_0.12/myobject.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef MYOBJECT_H
-#define MYOBJECT_H
-
-#include <node.h>
-#include <node_object_wrap.h>
-
-class MyObject : public node::ObjectWrap {
- public:
-  static void Init();
-  static void NewInstance(const v8::FunctionCallbackInfo<v8::Value>& args);
-  inline double value() const { return value_; }
-
- private:
-  explicit MyObject(double value = 0);
-  ~MyObject();
-
-  static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static v8::Persistent<v8::Function> constructor;
-  double value_;
-};
-
-#endif
diff --git a/8_passing_wrapped/node_0.12/package.json b/8_passing_wrapped/node_0.12/package.json
deleted file mode 100644
index 5c446be0..00000000
--- a/8_passing_wrapped/node_0.12/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "passing_wrapped",
-  "version": "0.0.0",
-  "description": "Node.js Addons Example #8",
-  "main": "addon.js",
-  "private": true,
-  "gypfile": true,
-  "dependencies": {
-    "bindings": "~1.2.1"
-  }
-}