JSON API serializers

![](http://img.myconfinedspace.com/wp-content/uploads/tdomf-2/479224/factory-made-assembly-line-23.gif)

With his PR:
 1. we start using serializers to format the response of our API, [here](http://new-bamboo.co.uk/blog/2013/11/21/oat-explicit-media-type-serializers-in-ruby) is an interesting article on why I propose to use the [Oat gem](https://github.com/ismasan/oat)

 2. we officially adopt [JSON API](http://jsonapi.org/) standard for our API requests and responses.