updating example and added demo

Author: Rody Davis

README.md

@@ -13,6 +13,8 @@ Avoid duplicating code and just write once for supported widgets.
 
 Android will use Material Design and iOS will use Cupertino style widgets.
 
+Online Demo: https://fluttercommunity.github.io/native_widgets/
+
 ## Usage
 
 To use this plugin, add `native_widgets` as a [dependency in your pubspec.yaml file](https://flutter.io/platform-plugins/).

docs/assets/AssetManifest.json

@@ -0,0 +1 @@
+{"packages/cupertino_icons/assets/CupertinoIcons.ttf":["packages/cupertino_icons/assets/CupertinoIcons.ttf"]}

docs/assets/FontManifest.json

@@ -0,0 +1 @@
+[{"family":"MaterialIcons","fonts":[{"asset":"fonts/MaterialIcons-Regular.ttf"}]},{"family":"packages/cupertino_icons/CupertinoIcons","fonts":[{"asset":"packages/cupertino_icons/assets/CupertinoIcons.ttf"}]},{"family":"MaterialIcons","fonts":[{"asset":"fonts/MaterialIcons-Regular.ttf"}]}]

docs/assets/LICENSE

@@ -0,0 +1,41 @@
+'use strict';
+const CACHE_NAME = 'flutter-app-cache';
+const RESOURCES = {
+  "/index.html": "e36211d86e9c70409c58295974f749a1",
+"/main.dart.js": "fb604667472ef3b7cc78860425fef951",
+"/favicon.png": "5dcef449791fa27946b3d35ad8803796",
+"/icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1",
+"/icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1",
+"/manifest.json": "00e0b69b49487ce4f9ff0c5fac8fda49",
+"/assets/LICENSE": "1502721d45cdb6c295a383cdd15fb963",
+"/assets/AssetManifest.json": "2efbb41d7877d10aac9d091f58ccd7b9",
+"/assets/FontManifest.json": "f7161631e25fbd47f3180eae84053a51",
+"/assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "9a62a954b81a1ad45a58b9bcea89b50b",
+"/assets/fonts/MaterialIcons-Regular.ttf": "56d3ffdef7a25659eab6a68a3fbfaf16"
+};
+
+self.addEventListener('activate', function (event) {
+  event.waitUntil(
+    caches.keys().then(function (cacheName) {
+      return caches.delete(cacheName);
+    }).then(function (_) {
+      return caches.open(CACHE_NAME);
+    }).then(function (cache) {
+      return cache.addAll(Object.keys(RESOURCES));
+    })
+  );
+});
+
+self.addEventListener('fetch', function (event) {
+  event.respondWith(
+    caches.match(event.request)
+      .then(function (response) {
+        if (response) {
+          return response;
+        }
+        return fetch(event.request, {
+          credentials: 'include'
+        });
+      })
+  );
+});