Merge pull request #14 from RubyLouvre/master

合并原作者更新
update dropdown
by qianjun;add tree-menu demo
Merge branch 'master' of https://github.com/RubyLouvre/avalon.oniui.git
Merge pull request #434 from gogoyqj/master

add tree menu
fix tree,tree-menu bug;add tree build scripts
update
Merge pull request #436 from gogoyqj/master

fix tree,tree-menu bug;add tree build scripts
update avalon
progressbar 目录结构更新
Merge pull request #437 from roscoe054/master

progressbar 目录结构更新
Merge pull request #128 from RubyLouvre/master

merge oniui