Yay thanks to a wonderful email from parnt; here is the pull request for the Gemfile to be Jruby compatible.
Changed the Gemfile to be Jruby compatible.
You are very privileged to receive a lovely email from @parndt, he never sends me any!
A couple of questions:
@malclocke I sent you one yesterday in pull request form :p
Either this, or #114, should be merged so that both can be dealt with :-)