Uninstall instructions might be nice

[haraldreingruber-dedalus]

Hi,

we recently used mob.sh in our mob-programmig meetup and were very happy about how it works.
But we noticed, for some people it's a little barrier installing a tool they don't know just for the sake of a few hours session.

Maybe some uninstall instructions could help in this case, so they see how easy it is to remove it afterwards (not that I think many would).

Could it be that just the /usr/local/bin/mob binary has to be deleted?

[simonharrer]

Depends on the way you install it. But in the normal case, just delete the binary from the folder. Feel free to create a PR.