Previously, invoking the install.rb script with zero arguments
caused it to attempt to install all gems without a version
suffix, which would fail spectacularly. Failing gracefully with
a usage message is more helpful to a first-time user.
Dear Active Resource,
It's not that I hate you or anything, but you didn't get much attention lately. There're so many alternatives out there, and I think people have made their choice to use them than you. I think it's time for you to have a big rest, peacefully in this Git repository.
I will miss you,
@sikachu.
