Update `README` demo GIF

[davidbtadokoro]

In the project README - effectively its showcase - there is a GIF that serves as a demo of patch-hub. That GIF was made when version 0.1.0 was released, so much functionality would be interesting to showcase to potential users/contributors/etc. are missing, like patch renderers, loading screen, replying to a subset of patches, new motions for patch previews, fullscreen patch previews...

Basically, it would be nice to update this GIF.

[davidbtadokoro]

As a suggestion by @OJarrisonn and @auyer, I think we should use asciinema to record the demo. It has a downside that the video will be hosted and visualized outside GitHub, but we could GIF the resulting video for better quality.

[KiranSatyaRaj]

Hey @davidbtadokoro -
I've recorded a demo cast for this. You can find this here
I've also made a gif. Please let me know if it's good to go, I'll open a PR for this. :)