Actually, my code having no mention of license (and it being fairly different from the original) means that it falls under my [blanket Public Domain release](https://passcod.name/license.html) (that statement is a bit outdated and not really "out there" enough, but version 2 is on my todo-list :). I.e. the `LICENSE` file should contain this: https://gist.github.com/passcod/6861361

If you strongly wish your amendments to be under MIT, then I can concede a change, but otherwise I'd prefer to keep it like that.