This is adapted from the one I use in my shell profile scripts. This
kinda-sorta-maybe acts like the `heroku` or `deis` commands and does
some clever reorganization of data before sending it to the server.
To use the app name generator, install the `elfs` rock from Moonrocks.
There was a bug in the setup page where valid domains that start with a number
would be captured by the validation check designed to detect IP
addresses. This check detects IPs by comparing the host name to a regex,
instead of simply detecting whether the first character is a number.
