add link to readme

Author: sidpalas

README.md

@@ -1,7 +1,9 @@
 # DevOps Directive Kubernetes Course
 
-This is the companion repo to my upcoming Kubernetes course! (TODO: link to video)
-![thumbnail](./readme-assets/thumbnail.jpg)
+This is the companion repo to my upcoming Kubernetes course! [Complete Kubernetes Course -- From BEGINNER to PRO
+](https://www.youtube.com/watch?v=2T86xAtR6Fo)
+
+[![thumbnail](./readme-assets/thumbnail.jpg)](https://www.youtube.com/watch?v=2T86xAtR6Fo)
 
 ## Using this repo