readme updated and capture added

Author: isradeleon

README.md

@@ -3,7 +3,10 @@
 [![API](https://img.shields.io/badge/support-API%2019%2B-green)](https://android-arsenal.com/api?level=19#l19)
 [![API](https://img.shields.io/badge/support-API%2028-violet)](https://android-arsenal.com/api?level=28#l19)
 
-Android library for easier showing system notifications. 
+Android library that simplifies showing system notifications.
+
+![preview](capture.jpg)
+
 
 Installation
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