I also made a Text Statistics javascript class based off of Mr. Child's! Any plans on putting your version on GitHub - I'd love to star it and use it to improve the version below.

https://github.com/christopherwoodall/Text-Statistics/blob/m...

as a Chrome addon https://chrome.google.com/webstore/detail/reading-level/lgfk...

edit: found it https://github.com/bilalq/Tranquillity-Editor/blob/master/pu...