Added a CommonJS Stub
Started adding Browserify Tests

I am committing mid-write code because i want to change the name to
commonjs, rather than browserify. In theory, allowing me to switch the
providers easily.
Renamed Browserify to Commonjs

By renaming, i am preparing for a future switch from Browserify
to CommonJS-Everywhere. I'll continue to write & use Browserify for now,
as that is the tool i currently know. But i believe CommonJS-Everywhere
is more flexible and better long term, so i'll likely switch to that.
Added CommonJS Coffee Support

Coffee Requires seem to be broke, that needs to be addressed next.