add license

Author: Mia Steinkirch

README.md

@@ -8,3 +8,14 @@ Some examples of modifications for modsecurity on Apache (used in examples in th
 
 This was a final project for the Stony Brook graduate Computer Security class, taught by Prof. Sekar.
 
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+----
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+## 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 />
+
+This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-sa/4.0/).