Add library for handling morse code.
This will be tapped when we want to send a pattern from the "not-yet-created" lights module.

The current example is taking the number of active-builds and using that value as a pattern.
Ex.) three active builds => ...-- where each dit/dah corresponds to lights being on (difference is in duration).
Add mocha test framework and some basic tests on the morse codec.
Add Travis CI config.
Merge pull request #7 from williambogaiv/master

Add morse code codec and some starter tests