That's correct. You get to whitelist the files we allow the user to choose. The mimetype should work for things like "text/" or "" if you want multiple, but I'l

That's correct. You get to whitelist the files we allow the user to choose. The mimetype should work for things like "text/" or "" if you want multiple, but I'll look into adding something that takes a list, if that's something that you would want. Thanks for catching that typo. We were debating if just to write 'callback' or to have a simple function that calls alert. We ended up with neither :D Fixed.