Investigate ActionCable integration

[ajb]

[aeberlin]

I think that #212 will actually make this easier to wrap minds around. If we refine the STOMP/websocket configuration vars and generalize those in Pusher, the bulk of the work would be building out ActionCable::Connection::Base interfaces and integrating it with the partial architecture.

The ActionCable effort looks very similar to the Stilts platform used by TorqueBox. Eerily similar.

It appears similar to STOMP, but I don't have the time atm to dig in more and see if it matches spec.

Do you know, @ajb?