Added new comments to CCNode header to explain the "cleanup" mechanism. Tidied up the CCNode header comment.
Added new comments to CCNode header to explain the "cleanup" mechanism.
Tidied up the CCNode header comment.

finthamoussu/cocos2d-objc,knight2010/cocos2d-objc,zaneLou/cocos2d-objc,finthamoussu/cocos2d-objc,cogddo/cocos2d-objc,knight2010/cocos2d-objc,savysoda/cocos2d-objc,savysoda/cocos2d-objc,cocos2d/cocos2d-objc,savysoda/cocos2d-objc,codepython/cocos2d-objc,oxeron/cocos2d-objc,savysoda/cocos2d-objc,codepython/cocos2d-objc,oxeron/cocos2d-objc,knight2010/cocos2d-objc,cocos2d/cocos2d-objc,zaneLou/cocos2d-objc,codepython/cocos2d-objc,zaneLou/cocos2d-objc,cogddo/cocos2d-objc,finthamoussu/cocos2d-objc,finthamoussu/cocos2d-objc,cogddo/cocos2d-objc,zaneLou/cocos2d-objc,cogddo/cocos2d-objc,codepython/cocos2d-objc,knight2010/cocos2d-objc