Update README.md

README.md

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 Minerva Lite is a simplified web-based simulation of course registration. It is designed for demonstration, testing and educational purposes.
 
+## Demo Video
+
+<video controls src="https://huggingface.co/spaces/Yuj7/minerva-lite/resolve/main/demo.mp4"></video>
+
+[Watch demo](https://huggingface.co/spaces/Yuj7/minerva-lite/resolve/main/demo.mp4)
+
 ## Demo
 
 - **Online demo (Hugging Face):** https://huggingface.co/spaces/Yuj7/minerva-lite