This is an implementation of the "Tor side" of Proposal 279 ("naming layer api") so that actual naming plugins can be tested/prototyped "now" without changing Tor.
It will currently connect to a system tor on localhost:9051 or you can change this to 9151 (in poc.py) to react a Tor Browser Bundle instance.
This actually works and launches two example services, reached via: ..onion where the two services are .pet.onion for the ns_petname.py lookup (so try, e.g., "http://scihub.pet.onion" in TBB).
The other one is .demo.onion and will always remap to txtorcon's documentation hidden-service. So .demo.onion will redirect you to txtorcon's documentation.