I'd like to see some examples in JavaScript, instead of CoffeeScript. Since at this point only a smaller subset of developers use CoffeeScript, I think it might be overall useful to more people if the provided examples used plain JavaScript (that, and CoffeeScript developers tend to understand JavaScript already, and may already be used to converting one to the other).
They wrote you a nice library and are giving it away under an MIT license. You don't get to pick the style they use to write the examples. That's like going to a science lecture and walking up to the speaker afterwards to say, "Hey, I think you have some great theories, but you really should lose that Australian accent of yours. Most scientists aren't from Australia, you know."