Place fonts in a separate gem

[bkmgit]

It may be helpful to have the fonts used in darkfish: https://github.com/ruby/rdoc/tree/master/lib/rdoc/generator/template/darkfish/fonts placed in a separate Gem. There are example gems for fonts including: https://rubygems.org/gems/discourse-fonts https://rubygems.org/gems/dejavu-fonts This would perhaps also make it easier to only install one set of fonts instead of multiple copies of the same fonts when a project generates several documentation websites.

[okuramasafumi]

I'd think even the whole darkfish template could be a separate gem.