Package @ember-data/serializer/json-api

Ember Data 2.0 Serializer:

In Ember Data a Serializer is used to serialize and deserialize records when they are transferred in and out of an external source. This process involves normalizing property names, transforming attribute values and serializing relationships.

JSONAPISerializer supports the spec and is the serializer recommended by Ember Data.

This serializer normalizes a JSON API payload that looks like:

```app/models/player.js import Model, { attr, belongsTo } from '@ember-data/model';

export default class Player extends Model {