Add link to user attachments in README

Added a link to user attachments in the README.

Author: younghyopark

README.md

@@ -201,6 +201,10 @@ You can also modify the video viewport -- how far they are from your eyes.
 
 
 
+https://github.com/user-attachments/assets/db6250ee-f09f-4834-8b81-227d6c30fac4
+
+
+
 
 
 ## Acknowledgements