spec
fix style of tree
add ui/tree/Node.moveTo()
add demo tests
build
feature grunt
Merge branch 'feature-ui/tree' into 'master'

Feature ui/tree

add moveTo api for ui/tree/Node
bugfix: closable selector
Merge branch 'master' into feature-grunt

Conflicts:
	dist/debug.css
Merge branch 'feature-grunt' into 'master'

Feature grunt

你看看有必要将 grunt 做这样的分拆，如果觉得可以就 merge，否则直接忽略并 close 掉。
Merge branch 'feature-ui/dialog' of gitlab.alibaba-inc.com:zeroui/zero into feature-ui/dialog

Conflicts:
	src/ui/Dialog.js
Merge branch 'master' into feature-ui/dialog
Merge branch 'feature-ui/dialog'
Merge branch 'feature-ui/dialog' of gitlab.alibaba-inc.com:zeroui/zero into feature-ui/dialog
Merge branch 'feature-ui/dialog'
Merge branch 'master' into bugfix-zero.bind

Conflicts:
	dist/browser-debug.js
	dist/node-debug.js
bugfix zero.bind