module Middleman::Renderers::Markdown

def registered(app)
  app.extend ClassMethods
  
  app.set :markdown_engine, :maruku
  
  if !app.respond_to? :markdown_engine_prefix
    app.set :markdown_engine_prefix, ::Tilt
  end
  
  app.after_configuration do
    engine = app.settings.markdown_engine
    
    if engine.is_a? Symbol
      engine = app.tilt_template_from_symbol(engine)
    end
    
    ::Tilt.prefer(engine)
  end
end