// Define your translations
  var translations = {
    'Hello World!': 'Olá Mundo!'
  };

  var i18n = new I18n();                  // Initialize the translations plugin
  i18n.set(translations);                 // Apply the translations

  var template = "{{#_i18n_}}{{title}}{{/_i18n_}}";
  this.$el.html(Mustache.render( template, {title: 'Hello World!'}));     // Render

  console.log(i18n.translate('Hello World!')); // Olá Mundo!
  console.log(i18n.translate('lost in translation')); // lost in translation

// You will need to extend the i18n Backbone Model
// to provide the translations resource url
var xi18n = I18n.extend({
  url: function(){
    return '/translations/' + this.locale ? this.locale : 'en-GB';
  }
});

var i18n = new xi18n();

i18n.setLocale('pt-PT');
i18n.fetch({
  success: function(){
    console.log('translations loaded');
  },
});