updated: readme for persist_key_value

Author: nisrulz

persist_key_value/.idea/workspace.xml

@@ -1,8 +1,9 @@
-# persist_key_value
+# Persist Key Value
 
-Example project to demonstrate storing key value on disk
+Example app showing storing key value on disk using [shared_preference](https://pub.dartlang.org/packages/shared_preferences) plugin
+
+<img src="demo_img.gif" height="600em" />
 
 ## Getting Started
 
-For help getting started with Flutter, view our online
-[documentation](https://flutter.io/).
+For help getting started with Flutter, view online [documentation](http://flutter.io/).