Add getDescription method
Merge branch 'develop' into Merge_GUI_to_Develop
Temp commit
Modify events methods
Merge branch 'develop' into Merge_GUI_to_Develop
Merge branch 'develop' into Merge_GUI_to_Develop
Modify guy example
Merge pull request #3660 from nutty898/Merge_GUI_to_Develop

Merge gui to develop
1.rename cocoaction system files
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into #4684