public function store(PermissionRequest $request)
 {
     if (Auth::user()->can('create-permissions')) {
         $data = Permission::create($request->all());
         $permission = Permission::findOrFail($data->id);
         Session::flash('message', trans('auth::ui.permission.message_create', array('name' => $permission->name)));
         return redirect('auth/permission/create');
     }
     return redirect('auth/logout');
 }