/**
  * Returns a file in the assets directory
  * 
  * @return \Illuminate\Support\Facades\Response
  */
 public function file($path)
 {
     $file = Asset::getFullPath($path);
     if (Asset::isJavascript($path)) {
         return $this->javascript($path);
     }
     if (Asset::isStylesheet($path)) {
         return $this->stylesheet($path);
     }
     if (file_exists($file)) {
         return Response::download($file);
     }
     App::abort(404);
 }