Add commented out debugging code to webservice spec
Add commented out debugging code to webservice spec

faye-websocket or some lower level software swallows exceptions,
making it difficult to debug issues.  Added commented out code
for setting $DEBUG=true, so these exceptions will be printed,
and also for setting tracing in thin.

jeremyevans/roda,jeremyevans/roda,jeremyevans/roda,celsworth/roda,celsworth/roda,celsworth/roda