answering: http://stackoverflow.com/questions/27094321/rufus-scheduler-3-0-3-doesn%C2%B4t-work-with-puma-2-9-2
tested on ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]
git clone https://github.com/jmettraux/for_rober.git
cd for_rober/
bundle install
ruby serve.rb
MIT, see LICENSE.txt