[tor-relays] Updating arm

[Damian Johnson]

Hi Bill. Unfortunately Ubuntu pulls packages from the Debian
repositories when they cut a new release, then never update them
unless someone specifically requests a backport (both a hassle and
takes a while to catch someone's eye). In short - not at all your
fault, this is a common gotcha. ;)

We have plans afoot to add the tor-arm package to the TorProject deb
repositories which will make it a little easier to upgrade...
https://trac.torproject.org/projects/tor/ticket/3391

but until then I'd suggest removing the tor-arm deb, then downloading
the arm tarball and simply running 'sudo ./install' from it.

Let me know if you run into any issues! -Damian