I'm getting tired of not being quite sure how my README.rdoc will appear when loaded onto github. By adding this to the root of my app, I can 'ruby display_readme.rb' to see the rendered README.rdoc at localhost:4567

display_readme.rb

require 'sinatra'
require 'rdoc/markup/to_html'

get '/' do

  input_string = ""
  parser = RDoc::Markup::ToHtml.new
  File.open("README.rdoc", "r") do |file|
    file.each_line{|l| input_string << l}
  end
  parser.convert(input_string)
  
end

Oh: you also have to add this to your gemfile:

group :development do
  gem 'sinatra'
end