Rakefile + CoffeeScript + Titanium Mobile example

app.js

var app = {
  classes: { },
  models : { }
};

Ti.include('js/main.js');

main.coffee

Ti.include '/lib/underscore.js'
Ti.include '/lib/backbone.js'

Ti.include '/js/main_view_controller.js'

mvc = new app.classes.MainViewController()
mvc.open()

main_view_controller.coffee

class MainViewController
  constructor: ->
    @window = Ti.UI.createWindow
      title: "Main Window"

    @button = Ti.UI.createButton
      title: "button"
    @window.add @button
    @button.addEventListener 'click', this.handle_btn_click

  open: ->
    @window.open()

  handle_btn_click: (e) =>
    Ti.API.warn "button clicked: #{JSON.stringify e}"
    
app.classes.MainViewController = MainViewController

Rakefile

DEV_PROVISIONING_UUID = "3E4D9E49-E44B-4B73-AFAD-248C720ECD53"
DEV_SIGN = "Ruben Fonseca"
DEV_APP_NAME = "My greatest app"
DEV_APP_ID = 'com.0x82.app'

TITANIUM_SDK_VERSION = '1.8.2'
IPHONE_SDK_VERSION = '5.0'
BUILDER_PATH = "/Library/Application Support/Titanium/mobilesdk/osx/#{TITANIUM_SDK_VERSION}/iphone/builder.py"

if File.exists?(BUILDER_PATH)
  BUILDER = BUILDER_PATH
elsif File.exists?(File.expand_path('~') + BUILDER_PATH)
  BUILDER = File.expand_path('~') + BUILDER_PATH
else
  raise "Couldn't found builder.py for iPhone Titanium SDK #{TITANIUM_SDK_VERSION}"
end

task :run do
  sh 'coffee -c -l -o Resources/js coffee'

  FileUtils.mkdir_p('build/iphone')
  sh BUILDER, 'simulator', IPHONE_SDK_VERSION, File.dirname(__FILE__), DEV_APP_ID, DEV_APP_NAME
end

task :clean do
  sh "rm -rf ./build"
end

task :fresh => %w(clean run)

task :coffee do
  sh 'coffee -c -w -l -o Resources/js coffee'
end

task :default => [:run]

cool 1 line of my contribution was accepted =D