add ring theme model and restful api
add dynamic wallpaper and restful api
regist dynamic wallpaper model
Update .travis.yml
Update README.md
update readme
support for deeper folder
refactor image upload
lazy writting to database for theme model as generate _id only
fix typo of model name
refactor lib api
add url prefix to global
modify cleaning job of resources/
refactor views
import angular-bootstrap
update with refactor inprogress..
add indexCtrl
use bootstrap
use factory() instead of service()
modify style of lathe