Ember.js: getting data from back-end using JSONAPIAdapter - doesn't work

I'm trying to get data from remote backend api. As I followed the docs, (http://ift.tt/29SEXvp), 'The JSONAPIAdapter is smart enough to determine the URLs it communicates with based on the name of the model.' So I generated the Route, the Model and the Adapter.

Here's the code of the Adapter:

//app/adapters/app.js

import Ember from 'ember';
import JSONAPIAdapter from 'ember-data/adapters/json-api';
import JSONAPISerializer from 'ember-data/serializers/json-api';

export default JSONAPIAdapter.extend({
        ajax: Ember.inject.service(),
        host: 'http://ift.tt/1nhHxYZ',
        headers: {
        'API_KEY': '72b56103e43843412a992a8d64bf96e9'
        },
        pathForType: function(type) {
        return Ember.String.underscore(type);
        },
        serializer: JSONAPISerializer.extend({
        primaryKey: 'id',

        serializeId: function(id) {
            return id.toString();
        }
    })
});

The code of the Model

//app/models/movie.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
// import { belongsTo, hasMany } from 'ember-data/relationships';

export default Model.extend({
        poster_path: attr('string'),
        adult: attr('boolean'),
        overview: attr('string'),
        release_date: attr('string'),
        genre_ids: attr('array'),
        original_title: attr('string'),
        original_language: attr('string'),
        title: attr('string'),
        backdrop_path: attr('string'),
        popularity: attr('number'),
        vote_count: attr('number'),
        video: attr('boolean'),
        vote_average: attr('number')
});

The Router of the app:

//app/router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('movies', {
    path: '/'
  });
});

export default Router;

And the code of the Route:

//app/routes/movies.js

import Ember from 'ember';
import Movie from 'search-movies/models/movie';

export default Ember.Route.extend({
        model() {
                return this.store.findAll('movie');
        }
});

But if I run the app, I get the error of 404:

Error while processing route: movies Ember Data Request GET /movies returned a 404

I guess, the store service can't get the models. But why? I've generated the Adapter. Do I need to import it somewhere? Or what? Why this structure doesn't work? Need help.