Merge pull request #3 from chukong/master

merge from chukong
update lua binding manual for cocos2d-x 3.1 upgrading and Cocos Code IDE auto-complete
Merge pull request #300 from pandamicro/master

[Cocos2d-JS] Add AssetsManager documentation
Merge pull request #301 from honghui/master

update lua binding manual for cocos2d-x 3.1 upgrading and Cocos Code IDE auto-complete
Update en.md

correct some code format
add copy_resources for plugin-x
add plugin-x in catalog
fix indent
Merge pull request #302 from lyfshadyboss/patch-1

Update docs/tutorial/framework/html5/parkour-game-with-javascript-v3.0/chapter3/en.md
Merge pull request #303 from joshuastray/master

add copy_resources for plugin-x
place en with zh in plugin-x document
Merge pull request #305 from joshuastray/master

replace en with zh in plugin-x document
Add cocos2d-js v3.0 beta changelog.
added chinese version release note of cocos2d-js v3.0 beta.
 Add Actions documentation
Added english version of release note for cocos2d-js v3.0 beta
Updated asset manager document link.
updated update guide for cocos2d-js v3.0beta
Merge pull request #306 from VisualSJ/master

 Add Actions documentation
Added changed API list