pygments.rb is much better at highlighting

Match bash and unknown language highlighting to GitHub

Allow static rendering of markdown

require 'rubygems'
require 'gollum-lib'

markup = Gollum::Markup.new(false)

markup.render_default '**hi**'

Add font awesome class to anchors in TOC generation

Use fa-link

Make pygments.rb optional

Default to pygments when installed

Fix warning about test_path