rename shipment

lib/app.dart

@@ -16,7 +16,7 @@ import 'package:fcs/pages/main/model/main_model.dart';
 import 'package:fcs/pages/package/model/package_model.dart';
 import 'package:fcs/pages/payment_methods/model/payment_method_model.dart';
 import 'package:fcs/pages/rates/model/shipment_rate_model.dart';
-import 'package:fcs/pages/shipment/model/pickup_model.dart';
+import 'package:fcs/pages/shipment/model/shipment_model.dart';
 import 'package:fcs/pages/shipment_address/model/shipment_address_model.dart';
 import 'package:fcs/pages/main/splash_page.dart';
 import 'package:fcs/pages/staff/model/staff_model.dart';
@@ -40,7 +40,7 @@ class _AppState extends State<App> {
   final PaymentMethodModel paymentMethodModel = new PaymentMethodModel();
   final FcsShipmentModel fcsShipmentModel = new FcsShipmentModel();
   final LanguageModel lanuguageModel = new LanguageModel();
-  final PickUpModel pickUpModel = new PickUpModel();
+  final ShipmentModel shipmentModel = new ShipmentModel();
   final ShipmentRateModel shipmentRateModel = new ShipmentRateModel();
   final BoxModel boxModel = new BoxModel();
   final MessageModel messageModel = new MessageModel();
@@ -67,7 +67,7 @@ class _AppState extends State<App> {
       ..addModel(discountModel)
       ..addModel(shipmentRateModel)
       ..addModel(boxModel)
-      ..addModel(pickUpModel)
+      ..addModel(shipmentModel)
       ..addModel(invoiceModel)
       ..addModel(marketModel);
 
@@ -98,7 +98,7 @@ class _AppState extends State<App> {
           ChangeNotifierProvider.value(value: mainModel),
           ChangeNotifierProvider.value(value: staffModel),
           ChangeNotifierProvider.value(value: lanuguageModel),
-          ChangeNotifierProvider.value(value: pickUpModel),
+          ChangeNotifierProvider.value(value: shipmentModel),
           ChangeNotifierProvider.value(value: shipmentRateModel),
           ChangeNotifierProvider.value(value: shipmentAddressModel),
           ChangeNotifierProvider.value(value: packageModel),