Changed video source to youtube

README.md

@@ -2,4 +2,4 @@
 A simple snake game in the terminal. No third party libraries needed.
 
 ## Demo
-<video src="./media/sanke-demo.mp4" />
+[![Video Title](https://img.youtube.com/vi/VIDEO_ID/0.jpg)](https://www.youtube.com/watch?v=_coOVAW9qa4)