text: (function() {
      'use strict';
  
      angular
          .module('app')
          .config(stateConfig);
  
      stateConfig.$inject = ['$stateProvider'];
      function stateConfig($stateProvider) {
          $stateProvider.state('about', {
              parent: 'app',
              url: '/about',
              data: {},
              views: {
                  'content@': {
                      templateUrl: 'app/about/about.html'
                  }
              }
          });
      }
  })();
  