New Twiddle

controllers.application.js

import Ember from 'ember';

const { A, Controller, isBlank } = Ember;

export default Controller.extend({
  people: [
    { name: 'María',  surname: 'Murray' },
    { name: 'Søren',  surname: 'Williams' },
    { name: 'João',   surname: 'Jin' },
    { name: 'Miguel', surname: 'Camba' },
    { name: 'Marta',  surname: 'Stinson' },
    { name: 'Lisa',   surname: 'Simpson' }
  ],

  myMatcher(person, term) {
    return `${person.name} ${person.surname}`.indexOf(term);
  },
  
  suggest(term) {
    return this.get('people');
  },
});

templates.application.hbs

{{#power-select
  search=(action suggest)
  selected=selected
  onchange=(action (mut selected))
  as |suggestion term|
}}
  {{suggestion.name}}
{{/power-select}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1",
    "ember-power-select": "1.9.8",
    "ember-power-select-with-create": "0.4.4"
  }
}