Licenses - take your pick:

*** SIL Open Font 1.1 ***

http://scripts.sil.org/cms/scripts/page.php?item_id=OFL_web

*** Apache 2.0 ***

https://www.apache.org/licenses/LICENSE-2.0

*** Creative Commons Attribution 2.0 ***

https://creativecommons.org/licenses/by/2.0/
