Quick post: Add RESTful backend

#143 
Restful API:
![selection_006](https://cloud.githubusercontent.com/assets/7369740/4789414/f1544d14-5dc4-11e4-9362-b49602828350.png)


@amitaibu PR is ready.
instead of this, create another resource called groups, which will be the ``group`` bundle - so here we can use a reference.