Add recipe for fast browserify builds (without watchify)

[marcelbeumer]

By not using watchify you prevent having multiple watchers watch the same file (gulp uses gaze and watchify uses chokidar), and it seems easy enough to implement the caching ourselves.

[lucasmotta]

Works like a charm, well done @marcelbeumer :)

[yocontra]

Seems like this should be broken out into a module. Also watchify does more than just watch */.js - it actually walks the dependency tree and only watches what is being used.

I'm still in favor of watchify since it handles all of this under the hood - this seems like too much code for a simple task.

[yocontra]

I just updated the watchify recipe, I think it solves this problem just fine. This PR basically rewrites what watchify is doing under the hood - I would rather people use the module that makes it easier