Linux client

[rendaw]

I spent an hour or two futzing around before I was able to connect via RDP.

• rdesktop-vrdp didn't work (I've heard that project's defunct)
• xfreerdp didn't work
• remmina worked

It's possible that xfreerdp could work, but remmina seemed to work right out of the box whereas even after an hour of googling I couldn't find xfreerdp settings that worked, unfortunately.

Adding a recommendation to the readme for other linux users might be helpful.

Thanks for this, by the way! Aside from a fistful of issues with azure, windows in general, etc. this was super easy to get started with!