gem install sinatra
gem install sinatra-websocket
gem install haml
gem install pandoc-ruby
apt-get install pandoc
wget "https://github.com/aarongough/mini-smtp-server/raw/master/lib/mini-smtp-server/mini-smtp-server.rb"
ruby main.rb -o 0.0.0.0
The http server listens on port 4567 and the smtp server on 2525