Shouldn't be too difficult to implement. Here's one possible way to do it: https://gist.github.com/crcn/cac5b5826590abed921d https://gist.github.com/crcn/cac5b

Shouldn't be too difficult to implement. Here's one possible way to do it: https://gist.github.com/crcn/cac5b5826590abed921d https://gist.github.com/crcn/cac5b5826590abed921d