Mac Build Added

I've added a Mac build for all of you Apple product users out there! I don't personally have a Mac so I can't test it, so please let me know if there are any issues with that build in particular.

I'm thinking of adding a browser version of the game — is that something players would be interested in? Let me know in the comments below! I would probably have to remove the save system and it would definitely have to play at fullscreen, but it's doable. However, browser builds take FOREVER to compile, so I would only want to do it if there was significant interest. Browser games do get way more plays though, so there is that counterpoint.

Anyway, I hope all of you Mac users enjoy the game!