[Cocos2d-JS] Update Facebook API Reference
[Cocos2d-JS] Add Facebook test case doc
[Cocos2d-JS] Add Complements of Programming Guide
[Cocos2d-JS] Add programming guide 4.5 scene graph
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
[Cocos2d-JS] Fix Facebook pay API issue
[Cocos2d-JS] Improve Facebook docs
[Cocos2d-JS] Improve Facebook docs
Merge pull request #554 from pandamicro/master

[Cocos2d-JS] Improve programming guide and Facebook docs