Add Spock, Woodstox and Kinkan as dependency

Spock is an advanced testing and specification framework.

Woodstox is a StAX-compliant (JSR-173) XML-processor.

Kinkan is a citrus fruit. It's supposed to be delicious candied.
Those with citrus allergy beware. That must be hard though, so
many receipt involves citrus in some shape and form.
Add maven plugin, kinkan and woodstox dependencies
Add .travis.yml