session_destroy_controller.js

App.SessionDestroyController = Ember.Controller.extend({
  logout: function() {
    var self = this;
    $.ajax({
      url:  '/session',
      type: 'DELETE'
    }).always(function(response) {
      App.Session.setProperties({
        authToken:     '',
        authAccountId: ''
      });
      self.transitionToRoute('session.new');
    });
  }
});