Merge pull request #8 from sdc-alibaba/datepicker

add way to fix inline timepicker'bug
Merge remote-tracking branch 'origin/dev' into dropdown
rm console.log
fix dropdown bug
Merge pull request #9 from sdc-alibaba/dropdown

Dropdown css js
refactor checkbox
refactor checkbox
Merge remote-tracking branch 'origin/dev' into dropdown
Merge branch 'dropdown' into dev
Merge remote-tracking branch 'origin/dev' into dev