add how-to/use-project-mac-and-win
add how-to/upgrade-to_2_2_3
Update zh.md
move
Update en.md
Update en.md
Docs #5250: add plugin-x document
[Cocos2d-JS] Correct an issue
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
Docs #5250 : add doc for plugin integration
#5250: add ndk_module_path
Updated chapter 6 to cocos2d-js v3.0
updated catalog
upated chapter 7 to cocos2d-js v3.0
added missed image of chapter 6
updated catalog for chapter 7
Updated chapter 8 to cocos2d-js v3.0
Merge pull request #295 from u0u0/master

Merge branch 'master' of https://github.com/rainswan/cocos-docs
Merge pull request #291 from joshuastray/master

Docs #5250: add plugin-x document
Merge pull request #289 from xiebaochun/patch-4

Update en.md