[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' login.md ' in api-reference.
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' login.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' logout.md ' in api-reference.
Update logout_zh.md
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' logout.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK 'isloggedin.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK 'get-userid.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK 'get-accesstoken.md ' in api-reference
[Cocos2d-JS] Add image to Facebook Landing page
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
[Cocos2d-JS] Add Chinese doc for Facebook-SDK 'get-accesstoken.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' get-userid.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' isloggedin.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' login.md ' in api-reference
[Cocos2d-JS] Add Chinese doc for Facebook-SDK ' logout.md ' in api-reference
Merge pull request #5 from Molks/master

 [Cocos2d-JS] Add Chinese doc for Facebook-SDK ' login.md ' in api-reference.
Merge pull request #566 from pandamicro/master

[Cocos2d-JS] Add image to Facebook Landing page