Merge pull request #56 from WeweTom/master

Auto merge by kpm server
修复barchart legend超出svg画布的bug
Merge branch 'master' of https://github.com/kissygalleryteam/kcharts
add roadmap.md
over时候输出坐标
Merge pull request #57 from NecoleYu/master

地图组件修改
fix raphael arrow-end bug:quick and dirty
Merge branch 'master' of https://github.com/kissygalleryteam/kcharts into dev1.3
fix a raphael arrow-end bug:quick and dirty