(- fix meta tests) Fixing testling configuration for browserify 2.x

Turns out, since browserify 2.x doesn't include CoffeeScript support, and I have to use a custom
module to allow for that (coffeeify), testling's default browserify-based build process won't work
for my (CoffeeScript.) tests. Thus, I worked with [James Halliday]<http://github.com/substack> to
put together an alternative build process, using testling's undocumented `"preprocess"`
configuration-field.

This also involves providing a custom TAP-output-producing HTML file; I built this using Mocha's TAP
reporter.