Merge pull request #1661 from pandamicro/develop-3.0

Feature #4313: Implement NodeGrid
issue #4277 : Refactor CCBReader to support compile.
Merge pull request #1662 from SmallAiTT/iss_4277_fix4release3.0

issue #4277 : Refactor CCBReader to support compile.
Feature #4221: Change constants style in ccui
Merge branch 'develop-3.0' of git://github.com/cocos2d/cocos2d-html5 into develop-3.0