1、增加Mac平台模拟器工程。
Merge pull request #23 from chengstory/AddMacSimulator

Add mac simulator
1.  去掉AddChild 渲染顺序。
Merge pull request #24 from xiexin36/RefreshResSupportInCocos2dx

Refresh res support in cocos2dx
add timeline action
恢复原来的cocos2d-x代码,使用单独的NSOpenGLView进行绘制.
Merge pull request #25 from 2youyouo2/RefreshResSupportInCocos2dx

add timeline action
1、更新cocos2dx。
2、添加新动画line。
1, 添加动画文件
add method for PositionFrame
Merge branch 'RefreshResSupportInCocos2dx' of git://github.com/chengstory/cocos2d-x into RefreshResSupportInCocos2dx

Conflicts:
	extensions/proj.win32/libExtensions.vcxproj.filters
change default tween value to true
Merge pull request #26 from 2youyouo2/RefreshResSupportInCocos2dx

update TimelineAction
Merge branch 'RefreshResSupportInCocos2dx' of https://github.com/chengstory/cocos2d-x into RefreshResSupportInCocos2dx