Markdown lists with embedded, language-specific code blocks

gistfile1.md

List items:

1. List item 1

   def load_value(value)
     loader = Loader.new
     loader.load(value)
   end

2. List item 2

   def load_value(value)
     loader.load(value)
   end
   
   def loader
     @loader ||= Loader.new
   end