diff --git a/doc/HowToInstall.md b/doc/HowToInstall.md
index 47e4bdb..f17db4a 100644
--- a/doc/HowToInstall.md
+++ b/doc/HowToInstall.md
@@ -1,24 +1,40 @@
-## How to install
+# How to install
 
-### Squeak:
+## Squeak:
 
-You can use Installer:
-```
-Installer squeaksource
-    project: 'MetacelloRepository';
-    install: 'ConfigurationOfMessagePack'. 
-(Smalltalk at: #ConfigurationOfMessagePack) perform: #load.
+Hosted on SqueakSource Repository.
+(http://www.squeaksource.com/MessagePack.html).
+
+From Monticello:
+
+```smalltalk
+MCHttpRepository
+    location: 'http://www.squeaksource.com/MessagePack'
+    user: ''
+    password: ''
 ```
-### Pharo:
-You can use Gofer:
+
+You can also use Installer:
+
+```smalltalk
+Installer squeaksource
+    project: 'MetacelloRepository';
+    install: 'ConfigurationOfMessagePack'. 
+(Smalltalk at: #ConfigurationOfMessagePack) perform: #load.
 ```
-Gofer it
-      url: 'http://smalltalkhub.com/mc/MasashiUmezawa/MessagePack/main';
-      package: 'ConfigurationOfMessagePack';
-      load.
-(Smalltalk at: #ConfigurationOfMessagePack) perform: #load.
+
+## Pharo:
+
+You can use Metacello:
+
+```smalltalk
+Metacello new
+  baseline: 'MessagePack';
+  repository: 'github://msgpack/msgpack-smalltalk:develop/repository';
+  load.
 ```
-### VisualWorks:
+
+## VisualWorks:
 
 Hosted on [Public Store Repository](http://www.cincomsmalltalk.com/CincomSmalltalkWiki/PostgreSQL+Access+Page).
 http://www.cincomsmalltalk.com/publicRepository/MessagePack-All(Bundle).html
@@ -26,7 +42,7 @@ http://www.cincomsmalltalk.com/publicRepository/MessagePack-All(Bundle).html
 You can also download parcels:
 http://code.google.com/p/messagepack-st/source/browse/#hg%2FVisualWorks
 
-### VA Smalltalk:
+## VA Smalltalk:
 
 Hosted on [VAStGoodies.com](http://vastgoodies.com).
 
@@ -36,7 +52,7 @@ Tests: [MessagePackTests](http://vastgoodies.com/maps/MessagePack%20Tests).
 You can also download .dat files:
 http://code.google.com/p/messagepack-st/source/browse/#hg%2FVA%20Smalltalk
 
-### Dolphin Smalltalk:
+## Dolphin Smalltalk:
 
 Hosted on [Google Code site](<http://messagepack-st.googlecode.com>) (old version).
 
diff --git a/repository/BaselineOfMessagePack.package/.filetree b/repository/BaselineOfMessagePack.package/.filetree
new file mode 100644
index 0000000..57a6797
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/.filetree
@@ -0,0 +1,5 @@
+{
+	"separateMethodMetaAndSource" : false,
+	"noMethodMetaData" : true,
+	"useCypressPropertiesFile" : true
+}
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/README.md b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/baseline..st b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/baseline..st
new file mode 100644
index 0000000..54bac8b
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/baseline..st
@@ -0,0 +1,23 @@
+baseline
+baseline: spec 
+	<baseline>
+	spec for: #common do: [
+		spec 
+			package: 'MessagePack-Core';
+			package: 'MessagePackTest' with: [ spec requires: 'MessagePack-Core' ].
+		spec
+			group: 'default' with: #('Core' 'Tests');
+			group: 'Core' with: #('MessagePack-Core');
+			group: 'Tests' with: #('MessagePackTest'). ].
+	
+	spec for: #squeakCommon do: [
+		spec 
+			package: 'MessagePack-Squeak-Core' with: [ spec requires: 'MessagePack-Core' ]. 
+		spec
+			group: 'Core' with: #('MessagePack-Squeak-Core'). ].
+	spec for: #pharo do: [
+		spec preLoadDoIt: #preLoadForPharo.
+		spec 
+			package: 'MessagePack-Pharo-Core' with: [ spec requires: 'MessagePack-Squeak-Core' ]. 
+		spec
+			group: 'Core' with: #('MessagePack-Pharo-Core'). ].
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/preLoadForPharo.st b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/preLoadForPharo.st
new file mode 100644
index 0000000..5a4cdd3
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/instance/preLoadForPharo.st
@@ -0,0 +1,3 @@
+doits
+preLoadForPharo
+	Smalltalk globals at: #MpPhPortableUtil ifPresent: [ :cls | cls initialize].
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/methodProperties.json b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/methodProperties.json
new file mode 100644
index 0000000..f99b6f9
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/methodProperties.json
@@ -0,0 +1,7 @@
+{
+	"instance" : {
+		"preLoadForPharo" : "MasashiUmezawa 8/12/2018 14:37",
+		"baseline:" : "MasashiUmezawa 8/12/2018 14:36"
+	},
+	"class" : { }
+}
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/properties.json b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/properties.json
new file mode 100644
index 0000000..da1f722
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/BaselineOfMessagePack.class/properties.json
@@ -0,0 +1,11 @@
+{
+	"commentStamp" : "",
+	"super" : "BaselineOf",
+	"category" : "BaselineOfMessagePack",
+	"classinstvars" : [ ],
+	"pools" : [ ],
+	"classvars" : [ ],
+	"instvars" : [ ],
+	"name" : "BaselineOfMessagePack",
+	"type" : "normal"
+}
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/monticello.meta/categories.st b/repository/BaselineOfMessagePack.package/monticello.meta/categories.st
new file mode 100644
index 0000000..671ed41
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/monticello.meta/categories.st
@@ -0,0 +1 @@
+SystemOrganization addCategory: #BaselineOfMessagePack!
diff --git a/repository/BaselineOfMessagePack.package/monticello.meta/initializers.st b/repository/BaselineOfMessagePack.package/monticello.meta/initializers.st
new file mode 100644
index 0000000..e69de29
diff --git a/repository/BaselineOfMessagePack.package/monticello.meta/package b/repository/BaselineOfMessagePack.package/monticello.meta/package
new file mode 100644
index 0000000..6fef9b0
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/monticello.meta/package
@@ -0,0 +1 @@
+(name 'BaselineOfMessagePack')
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/monticello.meta/version b/repository/BaselineOfMessagePack.package/monticello.meta/version
new file mode 100644
index 0000000..d9fb3d0
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/monticello.meta/version
@@ -0,0 +1 @@
+(name 'BaselineOfMessagePack-MasashiUmezawa.1' message 'Added BaselineOfMessagePack' id '44154d34-982f-0d00-83a3-2e6a0a3ec998' date '12 August 2018' time '2:44:16.240166 pm' author 'MasashiUmezawa' ancestors () stepChildren ())
\ No newline at end of file
diff --git a/repository/BaselineOfMessagePack.package/properties.json b/repository/BaselineOfMessagePack.package/properties.json
new file mode 100644
index 0000000..6f31cf5
--- /dev/null
+++ b/repository/BaselineOfMessagePack.package/properties.json
@@ -0,0 +1 @@
+{ }
\ No newline at end of file