allows the rake ib and rake ib:open commands to use a default ins…

…tance of IB::RakeTask

README.md

@@ -35,22 +35,23 @@ Bundler.require
 require 'rubygems'
 require 'ib'
 
-IB::RakeTask.new do |project|
-  # ...
-end
-
 Motion::Project::App.setup do |app|
   # ...
 end
 
 ```
 
-## Upgrading to 0.7.0
+## Customizing `IB::Project`
+
+If you want to customize the `IB::Project` instance that creates `ib.xcodeproj`, you
+should create an instance of `IB::RakeTask` and pass it a block.  That block will be handed
+an instance of `IB::Project` that you can modify:
 
-Previous versons of `ib` automatically registered the `rake ib:open` command,
-but offered no way to customize the `IB::Project` that was created.  As of
-0.7.0, you will need to create a `IB::RakeTask` instance in your Rakefile, then
-you can use `rake ib` as before.
+###### Rakefile
+```ruby
+IB::RakeTask.new do |project|
+end
+```
 
 ## Usage
 

lib/ib/tasks.rb

@@ -3,10 +3,18 @@
 
 module IB
   class RakeTask
+    class << self
+      attr_writer :created
+      def created?
+        @@created ||= false
+      end
+    end
     include Rake::DSL
 
     def initialize
       require 'ib/project'
+      @@created = true
+
       @project = IB::Project.new
       yield @project if block_given?
       define_tasks
@@ -18,14 +26,36 @@ def define_tasks
         task :project do
           @project.write
         end
-
-        desc "Generates ib.xcodeproj and opens it in XCode"
-        task :open => :project do
-          system "open ib.xcodeproj"
-        end
       end
-      desc "Same as 'ib:open'"
-      task :ib => "ib:open"
     end
   end
 end
+
+
+namespace :ib do
+  desc "Generates ib.xcodeproj and opens it in XCode"
+  task :open do
+    if ! IB::RakeTask.created?
+      # create a default instance of IB::RakeTask
+      IB::RakeTask.new
+    end
+    Rake::Task['ib:project'].invoke
+    system "open ib.xcodeproj"
+  end
+
+  # if this task is invoked
+  task :project do
+    if ! IB::RakeTask.created?
+      puts "You haven't created an instance of IB::RakeTask in your Rakefile"
+      puts
+      puts "Add this somewhere in your Rakefile:"
+      puts
+      puts "    IB::RakeTask.new do |project|"
+      puts "      # you can customize the IB::Project here"
+      puts "    end"
+    end
+  end
+end
+
+desc "Same as 'ib:open'"
+task :ib => 'ib:open'