Merge branch 'dev' of https://github.com/sdc-alibaba/sui into dev
完善复杂触发元素时复杂tip的逻辑。升级文档
更换处理tip里内容换行情况的方式
增加参数width，手工设置宽度，注意和widthlimit不同。
Merge branch 'dev' of https://github.com/sdc-alibaba/sui into dev
Merge branch 'dev' into tooltip
widthlimit默认设置
Merge branch 'dev' of https://github.com/sdc-alibaba/sui into dev
Merge branch 'dev' into tooltip
update comments
Merge pull request #15 from sdc-alibaba/tooltip

Tooltip 增加参数width，适应复杂触发元素改造
update sidenav
update sidenav icon
Merge branch 'dev' into build
build