24pr travis yml

As a part of http://24pullrequests.com, I've enabled http://travis-ci.org support for your repo.
You can see a passing build here:  https://travis-ci.org/joshmoore/myth/builds/15926209

If you merge this PR, you'll need to activate the myth project on travis-ci.
See http://about.travis-ci.org/docs/user/getting-started/#Step-one%3A-Sign-in for more information.

All the best,
~Josh

P.S. See build https://travis-ci.org/joshmoore/myth/builds/15925496 for the failures in node 0.11, 0.8, and 0.6