Passenger support

This adds support for running faye-rails on passenger standalone 4.0 or passenger 4.0 on nginx 1.4+.

I also needed to bump faye, because faye 1.0 or later is required for passenger support.
Because this also required updating the faye javascripts, I added a small fix to tackle issue #15 in a sensible way.

I also have an updated [faye-rails-demo](https://github.com/felixbuenemann/faye-rails-demo/tree/passenger-demo).

I've also checked that thin and puma are still working properly using the demo app.