Update README.md

Author: mjhea0

README.md

@@ -1,3 +1,5 @@
 # Test-Driven Development with FastAPI and Docker
 
-![Continuous Integration and Delivery](https://github.com/YOUR_GITHUB_NAMESPACE/fastapi-tdd-docker/workflows/Continuous%20Integration%20and%20Delivery/badge.svg?branch=master)
+![Continuous Integration and Delivery](https://github.com/testdrivenio/fastapi-tdd-docker/workflows/Continuous%20Integration%20and%20Delivery/badge.svg?branch=master)
+
+https://testdriven.io/courses/tdd-fastapi/