fix typo of unicorn
Merge pull request #187 from williamherry/fix-typo

fix typo of unicorn
Merge pull request #1 from williamherry/feature/activity

活动详细markdown和时间选择插件
add validate for activities and change Gemfile source to ruby
Merge pull request #190 from zlx/feature/activity

william组  活动发布－活动报名功能
add warning for newbie
Merge pull request #191 from zlx/feature/modify_doc

Add warning for newbie
make activity show page looks more nice