update engine version
Revert "update engine version"

This reverts commit e2db75a86907a44f2fbce01297af8c1c680cd89e.
Merge branch 'master' of https://github.com/chukong/cocos-docs
add clipping node
Merge pull request #465 from gloryming/master

add clipping node
add support for ndk r9d
Merge branch 'master' of https://github.com/chukong/cocos-docs
fixed en.md syntax error
Merge pull request #466 from honghui/master

add support for ndk r9d
updated catalogs
Merge branch 'master' of https://github.com/chukong/cocos-docs
Merge pull request #467 from gloryming/master

updated catelogs
Merge pull request #464 from pandamicro/master

[Cocos2d-JS] Improve Facebook SDK docs
Update zh.md
Add Cocos Studio new manual.
refine files
Merge pull request #469 from gloryming/master

refine files
fix 3 link error
fix a word error
Merge pull request #470 from hanrea/master

Add Cocos Studio new manual