Update README.md

Author: nishant-d

README.md

@@ -1,3 +1,5 @@
 # demo
+<div align="center">
+  <a href="https://www.youtube.com/watch?v=YOUTUBE_VIDEO_ID_HERE"><img src="https://img.youtube.com/vi/YOUTUBE_VIDEO_ID_HERE/0.jpg" alt="IMAGE ALT TEXT"></a>
+</div>
 
-[![Watch the video](https://img.youtube.com/vi/T-D1KVIuvjA/maxresdefault.jpg)](https://youtu.be/T-D1KVIuvjA)