Update README.md

Author: amirata051

README.md

@@ -1 +1,3 @@
-[![build](https://github.com/Star-Academy/Summer1404-SE-Team03/actions/workflows/buildPipeline.yml/badge.svg?branch=Phase06)](https://github.com/Star-Academy/Summer1404-SE-Team03/actions/workflows/buildPipeline.yml)
+[![build](https://github.com/Star-Academy/Summer1404-SE-Team03/actions/workflows/buildPipeline.yml/badge.svg?branch=Phase06)](https://github.com/Star-Academy/Summer1404-SE-Team03/actions/workflows/buildPipeline.yml)
+
+[![codecov](https://codecov.io/gh/Star-Academy/Summer1404-SE-Team03/branch/Phase06/graph/badge.svg?token=7SI3N9O51S)](https://codecov.io/gh/Star-Academy/Summer1404-SE-Team03)