Unable to get data from json file in ember js

I am new to ember js ,i want to get data from a json file i am not gettind any output in browser.

app/route/index.js

   import Ember from 'ember';
   export default Ember.Route.extend({
      model: function(){
        return this.$.getJSON("app.json");
      }
   });

app/template/index.hbs

  <h1> I won    today! </h1>

app.json

    {
    "tot": 100
    }

Is it have to use adapter concept to render data from json file?