require 'datamapper-tutorial' gem 'wbzyl-rack-codehighlighter' require 'rack/codehighlighter' gem 'ultraviolet' require 'uv' use Rack::ShowExceptions use Rack::Lint use Rack::Codehighlighter, :ultraviolet, :element => '//pre/code', :markdown => true run WB::DatamapperTutorial.new