requires 
enscript
ps2pdf (on linux)
pstopdf (on mac)
and an internet connection to download dependencies
I don't believe this works on windows, but maybe in Cygwin

While it is annoying to include in the git repo. You can find an already
compiled uberjar in the build/lib folder just in case you don't have the means
to install groovy (that jar should work with the Sun JVM).