Some enhancements

Back when I first started at Instrument, I grabbed this repo and hacked on it a lot.  I think I tidied it up a whole shitload and made it work with more modern Node.js techniques.  It's still not totally up-to-date but this removed a ton of lines of code.

I also built a package.json (so you can install all its deps with one command), removed some sensitive things that shouldn't have been in the repo, and stripped away some unnecessary dependencies.

Merge if you feel so inclined!