i18n

controllers.application.js

import Ember from 'ember';
import { translationMacro as t } from "ember-i18n";

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  i18n: Ember.inject.service(),
  init: function() {
    console.log(this.get('i18n').t('plural', {count: 1}).toString());
    console.log(this.get('i18n').t('plural', {count: 0}).toString());
    console.log(this.get('i18n').t('plural', {count: 1}).toString());
  }
});

locales.en.config.js

// Ember-I18n includes configuration for common locales. Most users
// can safely delete this file. Use it if you need to override behavior
// for a locale or define behavior for a locale that Ember-I18n
// doesn't know about.
export default {
  // rtl: [true|FALSE],
  //
   pluralForm: function(count) {
     if (count === 0) { return 'zero'; }
     if (count === 1) { return 'one'; }
     if (count === 2) { return 'two'; }
     if (count < 5) { return 'few'; }
     if (count >= 5) { return 'many'; }
     return 'other';
   }
};

locales.en.translations.js

export default {
	"plural": {
		"zero": "Zero plural",
		"other": "Other plural"
  }
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  
		"i18n": {
			"defaultLocale": "en"
		},
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3",
    "ember-i18n": "5.2.1"
  }
}