Add image min to watch.
Add image min to watch.

Since we are omitting some images from the copy step
and now have moved the responsiblity to the compressor, we need to
make sure to add the compressor into the watch step. Otherwise most
of the images are not brought over in watch mode.

marionettejs/marionettejs.com,marionettejs/marionettejs.com,denar90/marionettejs.com,denar90/marionettejs.com,peterblazejewicz/marionettejs.com,denar90/marionettejs.com,peterblazejewicz/marionettejs.com,peterblazejewicz/marionettejs.com