Navigation Controller Step 3

navigation.js

// in app/controllers/navigation.js
var NavigationController = Ember.ArrayController.extend({
  content: Ember.A([
    Ember.Object.create({title: "About", location: 'about', active: null}),
    Ember.Object.create({title: "Projects", location: 'projects', active: null})
  ]),
  title: "Almighty Machine"
});

export default NavigationController;