Rubinius support

[jume-dev]

Rails disco seems to work with the rbx head on ruby 2. Only exception, and unfortunatly this is kinda big, the projection server script doesn't wait on anything and stops execution after all. So line 25 in the event_client.rb https://github.com/hicknhack-software/rails-disco/blob/master/active_projection/lib/active_projection/event_client.rb#L25 should be anything else to make the projectionservers wait there. Ideas on this would be appreciated.