DON'T MERGE: Example of mounting Deltacloud API into Winged Monkey

This is just an example of how Deltacloud API could be mounted into WM as Rack middleware.
Please note, that Gemfile.lock needs update (rbovirt/openstack). 

After you launch Rails server ($ rails s) DC should be available on 'http://0.0.0.0:3000/api?format=xml'

I also left crappy example of how you can connect to that API from the controller.