better browserify + easier install

These changes let browserify directly bundle from source 1) using coffeeify to transform cs to js on the fly and 2) using webworkify to inline the worker js

This isn't quite ready to merge yet, (I think this will break the build/dist step) -- but wanted to get thoughts.

If the build step is fixed, this should make installation easier for script tag users (they'll only have to put one script on the page) as well as making this easily browserifyable for npm users.