videos/README.md

These videos are from the following public domain:

- https://www.pexels.com/video/young-guy-doing-break-dance-on-the-street-5362370/
- https://www.pexels.com/video/a-woman-dancing-at-home-6003986/
- https://www.pexels.com/video/long-haired-man-dancing-in-a-library-6344381/
- https://www.pexels.com/video/a-female-model-dancing-around-6815069/