Merge branch 'master' of https://github.com/dxq613/bui

update
init pie
Merge branch 'master' of https://github.com/dxq613/bui
Merge branch 'master' into issue_1.0.0
add hash change mode
Merge branch 'master' of https://github.com/dxq613/bui into issue_1.0.0
新增饼图的部分代码
Merge pull request #115 from fangk/issue_1.0.0

Issue 1.0.0