add license

Author: Mia Steinkirch

README.md

@@ -14,7 +14,13 @@ $ pip install -r requirements.txt
 ```
 
 
-##  ✨ License
+
+----
+
+
+## License
+
+When making a reference to my work, please use my [website](http://bt3gl.github.io/index.html).
 
 <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br />