This project is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. The full license is available from the link but, in short, it's easiest to comply if you fork the repo to an open repository and recieve no monetary compensation for any changes.
Commercial use is cool BUT you have to get touch with us and arrange terms first! See section 2(b)(3) of the license and make your life easy.