Finished model generator!

- You now can call yo ember-laravel:model modelName
- model attrs can be added by adding 'attrName:type'
  - like so: `yo ember-laravel modelName name:string`
- supports relationships like so
  `attrName:relationshipType:relatedModel`

Future: add flag for creating Fixtures
Finished model generator!

    - You now can call yo ember-laravel:model modelName
    - model attrs can be added by adding 'attrName:type'
        - like so: `yo ember-laravel modelName name:string`
        - supports relationships like so
          `attrName:relationshipType:relatedModel`

  Future: add flag for creating Fixtures