well documented CCNode
Merge branch 'master' of https://github.com/cocos2d/cocos2d-x
Merge branch 'master' of https://github.com/cocos2d/cocos2d-x
CCNode: add [set|get]Position[X|Y](void) back.
CCNode: add [set|get]Position[X|Y](void) back.
remove "inline" keyword from set/getPositionX/Y() methods to make the compilation property without additional flags.
Merge pull request #1857 from walzer/master

fixed #1678: Well documented CCNode member functions and variables.