Integrate the autobahn ws test suite

[omorandi]

See http://autobahn.ws/testsuite/index.html

[yuchi]

We can also have Travis CI do some work for us. See this .travis.yml.

Challenges IMHO:

• low connectivity,
• hang-ups,
• bg/fg switching.

[HilkoLantinga]

Just wondering why you are using websocket in the test app and not ws, ws passes all autobahn tests and seems like the perfect candidate to test against. And for the record, W3C spec and passing autobahn are excellent ideas.

[omorandi]

@HilkoLantinga, thanks. The current test app + echo server are just meant for quick & dirt testing, so I didn't put much thought on what websocket implementation to use in the node server. The autobahn test suite provides its own server anyway, so the point, in the long term, will be to implement client interaction with that server