Change the Rakefile for a Thorfile.

Gemfile

@@ -1,5 +1,5 @@
 source :rubygems
 
-gem 'json-pure'
+gem 'json_pure'
-gem 'rake'
+gem 'thor'
 gem 'uglifier'

Gemfile.lock

@@ -3,8 +3,9 @@ GEM
   specs:
     execjs (1.3.0)
       multi_json (~> 1.0)
+    json_pure (1.6.5)
     multi_json (1.1.0)
-    rake (0.9.2.2)
+    thor (0.14.6)
     uglifier (1.2.3)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
@@ -13,5 +14,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  rake
+  json_pure
+  thor
   uglifier

README.md

@@ -12,7 +12,7 @@ Check out the official [KineticJS Tutorials](http://www.html5canvastutorials.com
 # Building the library
 To build the library, you need to have Ruby and Rubygems installed. After that, install the dependencies by running `bundle install`.
 
-To build a development version of the library, run `rake build:dev`. To build a minify version of the library, run `rake build:prod`.
+To build a development version of the library, run `thor build:dev`. To build a minify version of the library, run `thor build:prod`.
 
 # Adding a new file in the src directory
-If you add a file in the src directory, add into the array in the Rakefile.
+If you add a file in the src directory, add into the array in the Thorfile.

Rakefile

@@ -1,40 +0,0 @@
-require 'json/pure'
-
-# This is the list of files to concatenate. The first file will appear at the top of the final file. All files are relative to the lib directory.
-FILES = [
-  "license.js", "src/GlobalObject.js", "src/Node.js", "src/Container.js", "src/Stage.js",
-  "src/Layer.js", "src/Group.js", "src/geometries/Shape.js", "src/geometries/Rect.js", "src/geometries/Circle.js", "src/geometries/Image.js",
-  "src/geometries/Polygon.js", "src/geometries/RegularPolygon.js", "src/geometries/Star.js", "src/geometries/Text.js"
-]
-
-def concatenate
-  content = ""
-  FILES.each do |file|
-    content << IO.read(File.expand_path(file)) << "\n"
-  end
-  
-  return content
-end
-
-namespace :build do
-  desc "Concatenate all the js files into /dist/kinetic.js."
-  task :dev do
-    puts ":: Building the file /dist/kinetic.js..."
-    File.open("dist/kinetic.js", "w") do |file|
-      file.puts concatenate()
-    end
-    puts "   -> Done!"
-  end
-
-  desc "Concatenate all the js files in into /dist/kinetic.min.js and minify it."
-  task :prod do
-    puts ":: Building the file /dist/kinetic.min.js..."
-    require 'json/pure'
-    require 'uglifier'
-    File.open("dist/kinetic.min.js", "w") do |file|
-      file.puts Uglifier.compile(concatenate())
-    end
-    puts ":: Minifying the file /dist/kinetic.min.js..."
-    puts "   -> Done!"
-  end
-end

Thorfile

@@ -0,0 +1,52 @@
+require 'json/pure'
+
+class Build < Thor
+  include Thor::Actions
+  # include Thor::Shell::Basic
+  
+  # This is the list of files to concatenate. The first file will appear at the top of the final file. All files are relative to the lib directory.
+  FILES = [
+    "license.js", "src/GlobalObject.js", "src/Node.js", "src/Container.js", "src/Stage.js",
+    "src/Layer.js", "src/Group.js", "src/geometries/Shape.js", "src/geometries/Rect.js", "src/geometries/Circle.js", "src/geometries/Image.js",
+    "src/geometries/Polygon.js", "src/geometries/RegularPolygon.js", "src/geometries/Star.js", "src/geometries/Text.js"
+  ]
+  
+  desc "dev", "Concatenate all the js files into /dist/kinetic.js."
+  def dev
+    puts ":: Building the file /dist/kinetic.js..."
+    File.open("dist/kinetic.js", "w") do |file|
+      file.puts concatenate()
+    end
+    puts "   -> Done!"
+  end
+  
+  desc "prod", "Concatenate all the js files in into /dist/kinetic.min.js and minify it."
+  def prod
+    puts ":: Building the file /dist/kinetic.min.js..."
+    require 'json/pure'
+    require 'uglifier'
+    File.open("dist/kinetic.min.js", "w") do |file|
+      file.puts Uglifier.compile(concatenate())
+    end
+    puts ":: Minifying the file /dist/kinetic.min.js..."
+    puts "   -> Done!"
+  end
+  
+  desc "all", "Build the development and the production files."
+  def all
+    invoke :dev
+    invoke :prod
+  end
+  
+  private
+  
+    def concatenate
+      content = ""
+      FILES.each do |file|
+        content << IO.read(File.expand_path(file)) << "\n"
+      end
+      
+      return content
+    end
+end
+