Test functionality on a Raspberry-Pi

[GhostofGoes]

Test that this works on a R-Pi.

• Run tox
• Run get-mac -i <interface> with any interfaces on the device
• Run get-mac -n <ip> with the IP of the router or another device the Pi is networked to

[gitruili]

@GhostofGoes I'd like to do this one!

[GhostofGoes]

@gitruili Go for it. In the pull request, include samples of some of the common commands on the device, e.g. arp.

[GhostofGoes]

Ignore my previous comment, apologies. We know what the command output is going to be. What I'd like contributed back:

• If there were any bugs, a fix
• Check off the box in TODOs
• Add your name to the contributors list in the README