Run tests immediately after running `npm run watch`

[jamesplease]

Right now it just sets up the watcher. It should run the tests immediately, too, I think.

What do you think @thejameskyle?

If the tests fail, then the watch task never runs with this code:

gulp.task('watch', ['test'], watch);

[jamesplease]

Gonna close for now, as it's not super important.