Merge pull request #2 from chukong/develop

Merge branch 'develop' of https://github.com/chukong/quick-cocos2d-x into develop
modify samples code on android or iOS device
Win32 message loop optimization

Let the thread sleep at each frame's idle time. It can save a lot of CPU cost when the application is minimized or running a simple scene.
Merge pull request #316 from lixianlin/win32_message_loop_optimization

Win32 message loop optimization
remove duplication files
modify umeng share iOS code
Merge pull request #317 from htlxyz/feature/remove_deprecated_function

Feature/remove deprecated function
Merge branch 'develop' of https://github.com/chukong/quick-cocos2d-x into develop
update welcome app