Rename rubygem port to match the rules.
If a port depends on rails it should have a suffix for the rails version.
This suffix should be separated from a old version like 1-rails4 instead of 1.
create USES=gem and update rubygem- ports to use it
Note that for now ports still have to have USE_RUBY=yes to use USES=gem
PR: 209041
Differential Revision: https://reviews.freebsd.org/D6070
new port: mail/rubygem-roadie-rails
Hooks Roadie into Rails applications to help with HTML email generation.
WWW: https://github.com/Mange/roadie-rails