/**
  * Remove the specified resource from storage.
  *
  * @param  int  $id
  * @return Response
  */
 public function destroy($id, InvoiceRepository $invoiceRepository, Flash $flash)
 {
     $invoice = $invoiceRepository->deleteInvoice($id);
     $flash->info('Invoice has been deleted.');
     return redirect()->route('users.show', $invoice->user->id);
 }