Adds the start of a new sample showcasing Cupertino widgets. (#12)

veggieseasons/lib/main.dart

@@ -0,0 +1,22 @@
+// Copyright 2018 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/services.dart' show DeviceOrientation, SystemChrome;
+import 'package:veggieseasons/screens/home.dart';
+import 'package:veggieseasons/styles.dart';
+
+void main() {
+  SystemChrome.setPreferredOrientations([
+    DeviceOrientation.portraitUp,
+    DeviceOrientation.portraitDown,
+  ]);
+
+  runApp(
+    CupertinoApp(
+      color: Styles.appBackground,
+      home: HomeScreen(),
+    ),
+  );
+}