A Ruby script to start shoes4

* can be used as the executable of a gem release
* does not depend on the place it is started from, which I need to try to run
  hacketyhack as hackety sadly depends on where you start it from
* I think that this is the simplest possible ruby script to achieve this :-)
Merge pull request #269 from PragTob/ruby_shoes

A Ruby script to start shoes4 - find it in bin/ruby-shoes