add publish ios english documents
Merge branch 'master' of https://github.com/chukong/cocos-docs
Adjust the Studio catalog.
updated files
Merge pull request #494 from gloryming/master

updated files
Merge pull request #492 from HujiangDeia/master

publish ios documents for english
Merge branch 'master' of https://github.com/hanrea/cocos-docs

Conflicts:
	catalog/studio/zh.md
Merge pull request #495 from u0u0/master

merge
[Cocos2d-JS] Improve docs for 3.0 Release
Merge branch 'master' of https://github.com/cocos2d/cocos-docs