Taken from PR 199931 with some modifications, mainly deleting pkg-plist and adding GEM_NAME in Makefile.
Proposed commit message:
new port: textproc/rubygem-rugments Simple, easy to extend drop in replacement for pygments WWW: https://github.com/rumpelsepp/rugments PR: 199931 Submitted by: Torsten Zuehlsdorff <ports@toco-domains.de> Approved by: swills (mentor), mat (mentor)