update the app description

Author: tibbi

README.md

@@ -1,5 +1,14 @@
-# Simple-Notes
-A textfield for adding notes with a widget.
+# Simple Notes
+<img alt="Logo" src="app/src/main/res/mipmap-xxxhdpi/launcher.png" width="80">
+
+A textfield for adding quick notes with a widget.
+
+Need to take a quick note of something to buy, an address, or a startup idea? Then this is the app you've been looking for!
+You can access the note in no time by using the customizable and resizable widget, which opens the app on click.
+
+<img alt="App image" src="screenshots/app.png" width="250">
+<img alt="App image" src="screenshots/widget_config.png" width="250">
+<img alt="App image" src="screenshots/widget.png" width="250">
 
 License
 -------