(function(){document.body.appendChild(document.createElement('script')).src='https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js';})();

(function(){
  var url = 'https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js';
  document.body.appendChild(document.createElement('script')).src=url;
})();

Update loader.js