update engine version
Revert "update engine version"

This reverts commit e2db75a86907a44f2fbce01297af8c1c680cd89e.
Merge branch 'master' of https://github.com/chukong/cocos-docs
[Cocos2d-JS] Fix link issues in Facebook docs
Update en.md

Remove some irrelevant code from the samples.

It's not present in the end PlayScene.js anyway,
and it doesn't make sense in the current scenario.
[Cocos2d-JS] Update getter setter list
Add Facebook payments api reference
Merge pull request #450 from VisualSJ/master

Add Facebook payments api reference
Add Facebook payments params info
return
Update Facebook param info
Create ko.md
Update ko.md
remove useless code
Update zh.md
Merge pull request #453 from joshuastray/master

remove useless code
rc3 new
roll back to rc2, and add rc3 document
Merge pull request #455 from joshuastray/master

rollback Facebook Android ducument to rc2, and add rc3 document
Merge pull request #454 from purpleenjae/patch-2

Update zh.md