Adds readme

Author: a7ul

examples/weather-app-widget/README.md

@@ -1,7 +1,17 @@
-# React Desktop Starter
+# Weather App widget
 
-To run:
+This example showcases how to build a basic weather widget app.
 
-`npm install`
+### Screenshots
 
-`npm start`
+**Mac:**
+
+<img alt="demo_mac" src="https://github.com/master-atul/react-desktop/raw/master/examples/weather-app-widget/weather_widget_mac.png" height="400" />
+
+To run the demo:
+
+0. `cd examples/weather-app-widget`
+
+1. `npm install`
+
+1. `npm start`