fix(test): Get Travis CI working

Got Travis CI now running tests on every push and PR.

https://travis-ci.org/abuecker/oauth-ng/builds/39897963

You might need to enable Travis for the main repo, if you haven't all ready done it:

http://docs.travis-ci.com/user/getting-started/#Step-one%3A-Sign-in

Just need the first 2 steps.  This should be done before merging.  The merge would then kick off a Travis build.