Docs don't specify that the 'requests' dependency is required

[dualscyther]

Hey, just pointing this out in case it's an issue. I noticed that if I run this script in a default, truenas configured jail, the jail will be lacking both Python 3 and the requests module.

If you only install Python 3 you get:

ModuleNotFoundError: No module named 'requests'

I solved it by doing pkg install python3 and pkg install py38-requests.

Might be worth putting in the README, not sure..