CCB_VERSION 6
load .ccbi file
CCBReader: parse string/text node properties
CCBReader:  calculate node position
CCBReader: parse contentSize node property.
CCBReader: parse scaleLock node property.
CCBReader: parse color3 node property.  NodeGradient
LayerGradient loader
CCBReader: parse LabelTTF properties
CCBLocalizationManager
LayerColor loader
cocos2d-x v3.0