Both co-op and the controls are in there , but the co-op isn't explicitly mentioned, and the controls shown are only for the keyboard (though I'll list the controls on the page itself). The UI for co-op didn't end up getting completed, but you can press a button on a controller and they'll take control of the second toy.
We've got these things taken care of in a version we'll be uploading this weekend. Thanks for playing in the meantime.