updated readme of each example with a screenshot/gif and more details about the example.

added more comments to code

load_local_json/README.md

@@ -1,8 +1,10 @@
-# load_local_json
+# Load Local JSON
+
+Example app showing implementation which loads up a json file from a local folder.
+
+<img src="demo_img.gif" height="600em" />
 
-A new Flutter project.
 
 ## Getting Started
 
-For help getting started with Flutter, view our online
-[documentation](http://flutter.io/).
+For help getting started with Flutter, view online [documentation](http://flutter.io/).

load_local_json/lib/main.dart

@@ -30,9 +30,11 @@ class MyAppState extends State<MyApp> {
                     .of(context)
                     .loadString('data_repo/starwars_data.json'),
                 builder: (context, snapshot) {
+                  // Decode the JSON
                   var new_data = JSON.decode(snapshot.data.toString());
 
                   return new ListView.builder(
+                    // Build the ListView
                     itemBuilder: (BuildContext context, int index) {
                       return new Card(
                         child: new Column(