Add Superhuman

Was going to open a PR but don't know how you want to do the versioning in your `.js` and `.json` files. They always have `r.superhuman.com` so it should be easy to add.

`https://r.superhuman.com/JWvaQ-CgLuLHbt4_ALpeQ32XRGQ-h1cou74ua2ZNtt8oZu=
gRza91tGfu4pygV-q-Q3CUq0qQoU0iERGHWqvbTnv2qwdp-OzuDI6kORmKkCn_bZ8WryXB-M0ap=
p7ICvyWudAH2FGFz_LuEwwy7aqgcocQ9Se8NrveNX9KmybSLC4iZ4f_.gif`