Just so you know, we added a license declaration to the style, which was missing, so it's clear under what conditions people can use it. We use the Creative Commons Attribution-ShareAlike 3.0 License for all styles in the repository: http://creativecommons.org/licenses/by-sa/3.0/
Somehow I overlooked this one. One of use will get to this within a week.
Thanks!
https://github.com/citation-style-language/styles/commit/653eb0653068c26f1baff3476dc64900f1e55d06