add quick catalog
modify link type
Merge branch 'master' of github.com:chukong/cocos-docs

Conflicts:
	catalog/framework/quick/zh.md
Merge branch 'master' of github.com:chukong/cocos-docs
Create ko.md
Create ko.md
Update ko.md
Merge branch 'master' of github.com:chukong/cocos-docs
porting document from quick v3 rc0
Merge pull request #508 from htlxyz/master

porting document from quick v3 rc0
divide quick document to V2 and V3
Merge pull request #509 from htlxyz/master

divide quick document to V2 and V3
Update zh.md
Update zh.md
Merge pull request #510 from purpleenjae/patch-6

Update zh.md
Merge pull request #511 from purpleenjae/patch-7

Update zh.md
Merge pull request #507 from tastynoodle/master

translated an article
Merge pull request #506 from sincntx/master

[Cocos2d-JS] Add v3.0 Final Korean doc
modify upgrade file
Merge pull request #513 from htlxyz/master

modify upgrade file