modify the routes
Merge branch 'master' of github.com:bay6/union
remove sign_in and add link of user
use timeline to show ongoing projects
modify the interface of project's index
modify the content of home#index
Merge branch 'master' of github.com:bay6/union
Merge pull request #108 from vincent178/master

READY: remove useless specs and refactor some codes
Merge pull request #107 from caok/master

修改了一些界面
Merge remote-tracking branch 'upsteam/master'
added default scope to solve the problem for sort record
Fixed #111
Merge branch 'master' of github.com:bay6/union
sort by commit_date desc
project search #99
Merge pull request #113 from mouse-lin/master

project search