Added --no-brutus option

Hey ninefolders - I know this gem is still fresh (and as cute as he is) I just threw in a quick `--no-brutus` CLI option, as our CI logs had grown by about 1,000 lines of animation sprites :smile:

I was going to include specs, but it didn't seem like there was coverage yet on either of those classes - let me know if there's anything else you'd like me to add though.