added release versions to readme.md

Author: OurCodeBase

docs/README.md

@@ -1,5 +1,7 @@
 A bash library to create standalone scripts.
 
+[![GitHub release](https://img.shields.io/github/v/release/OurCodeBase/bash-sdk)](https://github.com/OurCodeBase/bash-sdk/releases)
+
 There are some features of bash-sdk are mentioned here.
 * OOPS like code 💎.
 * Module based code 🗂️.