Writing a portfile for a single script

[Jeremy Lavergne]

> Thanks for the help, everyone! I liked Josh's way of using extract to
> copy to the ${distfiles} to the ${workpath}, so I ended up going with
> that. Should this go into
> <https://trac.macports.org/wiki/PortfileRecipes>? If so, would it be
> ok for me to add it or should a better wordsmith do that?

Feel free to add it now: a wordsmith can always clean up afterwards!