Deploy Merb, Sinatra, or any Rack App to Heroku http://blog.heroku.com/archives/2009/3/5/32_deploy_merb_sinatra_or_any_rack_app_to_heroku/ http://heroku.com/pages/quickstart http://heroku.com/docs http://heroku.com/ HerokuをGit経由で使ってみ...