feat: updated readme

Author: cybercoder-naj

README.md

@@ -1,5 +1,7 @@
 # Parkour
 
+[![Build and Test](https://github.com/cybercoder-naj/Parkour/actions/workflows/build-test.yml/badge.svg)](https://github.com/cybercoder-naj/Parkour/actions/workflows/build-test.yml)
+
 ![Parkour](https://i.kym-cdn.com/entries/icons/original/000/029/310/cover4.jpg)
 
 Parser combinator library for Kotlin.