text: System.config({
      defaultJSExtensions: true,
      packages: {
          app: {
              format: 'register',
              defaultExtension: 'js'
          }
      },
      paths: {
          'angular2/*': 'lib/angular2/*.js',
          'rxjs/observable/*': 'lib/rxjs/observable/*.js',
          'rxjs/operator/*': 'lib/rxjs/operator/*.js',
          'rxjs/*': 'lib/rxjs/*.js',
          './Subject': 'lib/rxjs/Subject.js'
      }
  });
  