cc image

Author: sdiehl

README.md

@@ -109,6 +109,8 @@ grammar, clarify, and fix errors.
 License
 -------
 
+<img src="http://mirrors.creativecommons.org/presskit/buttons/88x31/png/by-nc-sa.png" width="140" alt="Artwork CC BY NC SA" />
+
 This written work is licensed under a <a rel="license"
 href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons
 Attribution-NonCommercial-ShareAlike 4.0 International License</a>. You may