really stupid and simple web server for static content

server.rb

#!/usr/bin/env ruby
require 'sinatra'

PUBLIC_FOLDER = File.join(File.dirname(__FILE__) , 'site')

set :public_folder , PUBLIC_FOLDER
set :static , true

get '/' do 
    File.open(File.join(PUBLIC_FOLDER , 'index.html') , 'r').read.to_s
end