Extract timesInWords into it's own file

In preparation of moving towards Browserify and 2.0, I am extracting things into their own modules, hopefully breaking dependencies and making the files easier to reason about.

Also:

![unit-test-all-the-things](https://cloud.githubusercontent.com/assets/20321/3904925/ca72323a-22df-11e4-9f03-a7e977516a53.jpg)