加session
Merge remote-tracking branch 'gan/toMongo' into setSession
Merge remote-tracking branch 'origin/master' into setSession

Conflicts:
	package.json
加中间件
Merge remote-tracking branch 'origin/master' into setSession
实现基本的权限管理功能
改个bug
Merge remote-tracking branch 'origin/master' into setSession

Conflicts:
	routes/base.js
合并登入和登出的controller
宽度改小点
二了
Merge pull request #20 from UlricGan/setSession

实现基本的权限管理功能