notice new/deleted files and update the browser

[outofculture]

I think this mostly boils down to gulp.watch being not nearly as awesome as gulp-watch. I messily fixed this in our fork [1], but you'll probably want to keep the separation of config and tasks somehow (or not; I certainly didn't feel the need to do so).

[1] - https://github.com/cloudfour/veelo-patterns/pull/4/commits/50a4b972c38b5fc9a6ce5f71f5c6baf76250b300

[erikjung]

@outofculture This is something we've been annoyed with too. We will consider using gulp-watch, thanks for the recommendation.