/**
  * Store a newly created resource in storage.
  * POST /billings
  *
  * @return Response
  */
 public function store()
 {
     $validator = Validator::make($data = Input::all(), Billing::$rules);
     if ($validator->fails()) {
         return Redirect::back()->withErrors($validator)->withInput();
     }
     Billing::create($data);
     return Redirect::route('billings-item-get')->with('global', 'Item successfully created!');
 }