Some additional resources:
- http://stackoverflow.com/questions/20540877/correct-use-for-angular-translate-in-controllers/23866441#23866441
- https://blog.nraboy.com/2014/08/internationalization-localization-ionicframework-angular-translate/
- http://mcgivery.com/internationalization-of-an-ionic-app-multilanguage-support/
- Internationalization of an Ionic App: Multilanguage Support
Some sample code: https://github.com/Robinyo/Vardyger/blob/master/core/client/app/scripts/app.js