Added "The Public Domain: Enclosing the Commons of the Mind"

free-programming-books.md

@@ -275,6 +275,7 @@
 
 ####Licensing
 * [Creative Commons: a user guide](http://www.aliprandi.org/cc-user-guide/) - Simone Aliprandi
+* [The Public Domain: Enclosing the Commons of the Mind](http://www.thepublicdomain.org/download/) - James Boyle
 
 ####Machine Learning
 * [A Course in Machine Learning](http://ciml.info/dl/v0_8/ciml-v0_8-all.pdf) (PDF)