public function combo()
 {
     $sec = Secciones::all();
     return Response()->json($sec);
 }
 /** 
  * Show the form for creating a new resource.
  *
  * @return \Illuminate\Http\Response
  */
 public function create()
 {
     $secc = Secciones::all();
     return view('categorias.create', compact('secc'));
 }