text: var app = angular.module('firebaseApp.principal',['ngRoute']);
  app.config(['$routeProvider', function($routeProvider){
  	$routeProvider.when('/principal',{
  		templateUrl: 'principal/principal.html',
  		controller: 'principalCtrl'
  	});
  }]);
  app.controller('principalCtrl', function($scope, $firebaseArray, Notification, Datos){
  		$scope.username = Datos.getUser();
  });