adapter error message

adapters.applicationAdapter.js

console.log('hi')

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

models.book.js

import DS from 'ember-data';

export default DS.Model.extend({
    title: DS.attr('string')
});

routes.index.js

import Ember from 'ember';

var App = window.App = Ember.Application.extend();

App.ApplicationAdapter = DS.RESTAdapter.extend({
  host: 'https://api.gomore.com'
});

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#each books as |book|}}
  {{book}}
{{/each}}
<br>
<br>

twiddle.json

{
  "version": "0.4.8",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.8/ember.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.9/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.8/ember-template-compiler.js"
  }
}