I figured it was a common enough control scheme for indie games, but I'll definitely consider a "Press [button configured to jump] Key to Start" instead of "Press Start" on the title screen. Thanks for the critique!
Its possible that everyone knows that those are common controls - I don't really play side-scrollers unless it is for a good reason (play-test for other anons), so it is highly likely that it is me that is out of the loop.
