Merge pull request #43 from caok/master

fix the bug of search
Merge pull request #44 from caok/master

fix the bug of linked_dirs
Merge pull request #45 from caok/master

fix the copy_nondigest_assets
Merge pull request #46 from caok/master

use release_path instand of latest_release
Merge pull request #47 from caok/master

modify unicorn and add nginx.conf
Merge pull request #48 from caok/master

fix the bug of unicorn
Merge pull request #49 from caok/master

fix the bug of db:seed
need ffaker to seed db for production