Update index.rst, Mention that code examples are CC0.

Author: Mariatta

README.rst

@@ -56,5 +56,8 @@ See also
 License
 =======
 
-The content of this site is licensed under the `Creative Commons Attribution
-Share Alike 4.0 License <https://creativecommons.org/licenses/by-sa/4.0/>`_ (CC-BY-SA).
+All of the code examples in this site are licensed under the `Creative Commons Zero
+(CC0) <https://creativecommons.org/share-your-work/public-___domain/cc0/>`_ license.
+
+All other content of this site is licensed under the `Creative Commons Attribution
+Share Alike 4.0 (CC-BY-SA) <https://creativecommons.org/licenses/by-sa/4.0/>`_ license.

index.rst

@@ -68,3 +68,12 @@ Contributing
    :maxdepth: 2
 
    README.rst
+
+License
+=======
+
+All of the code examples in this site are licensed under the `Creative Commons Zero
+(CC0) <https://creativecommons.org/share-your-work/public-___domain/cc0/>`_ license.
+
+All other content of this site is licensed under the `Creative Commons Attribution
+Share Alike 4.0 (CC-BY-SA) <https://creativecommons.org/licenses/by-sa/4.0/>`_ license.