Add deeplink store sample (#1698)

* Adds deeplink store app

* push

* update md

* update

deeplink_store_example/lib/styles.dart

@@ -0,0 +1,46 @@
+// 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';
+
+abstract class Styles {
+  static const TextStyle productListTitle = TextStyle(
+    color: Color.fromRGBO(0, 0, 0, 0.8),
+  );
+  static const TextStyle productRowItemName = TextStyle(
+    color: Color.fromRGBO(0, 0, 0, 0.8),
+    fontSize: 18,
+    fontStyle: FontStyle.normal,
+    fontWeight: FontWeight.normal,
+  );
+
+  static const TextStyle productRowItemPrice = TextStyle(
+    color: Color(0xFF8E8E93),
+    fontSize: 13,
+    fontWeight: FontWeight.w300,
+  );
+
+  static const TextStyle productPageItemName = TextStyle(
+    color: Color.fromRGBO(0, 0, 0, 0.8),
+    fontSize: 20,
+    fontStyle: FontStyle.normal,
+    fontWeight: FontWeight.bold,
+  );
+
+  static const TextStyle productPageItemPrice = TextStyle(
+    color: Color.fromRGBO(0, 0, 0, 0.8),
+    fontSize: 20,
+    fontWeight: FontWeight.bold,
+  );
+
+  static const Color productRowDivider = Color(0xFFD9D9D9);
+
+  static const Color scaffoldBackground = Color(0xfff0f0f0);
+
+  static const Color scaffoldAppBarBackground = Color(0xffffffff);
+
+  static const Widget spacer = SizedBox(height: 10);
+
+  static const Widget largeSpacer = SizedBox(height: 100);
+}