* Use lang/ruby/gem.mk instead of misc/rubygems/rubygem.mk.
* Enable HOMEPAGE.
* Add LICENSE.
* Remove default value of GEM_BUILD.
* Add CONFLICTS since it will install the same name commands both
ruby18 and ruby19 based packages.
Changes may be too many please refer http://coderay.rubychan.de/ for
detail.
CodeRay is fast syntax highlighter for Ruby and other languages. It
produces colorful, valid XHTML. CodeRay's design goal: simple,
beautiful code highlighting for your board/wiki/blog/doc/website.