updated license

Author: ChrisBarker-NOAA

README.rst

@@ -86,11 +86,11 @@ Or the epub documentation:
 License
 =======
 
-This work is copyright Cris Ewing and Christopher Barker and licensed under the
-Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To
-view a copy of this license, visit
-http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative
-Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.
+To view a copy of this license, visit
+http://creativecommons.org/licenses/by-sa/4.0/
+or send a letter to
+Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
 
 A copy of this license in text format is included in this package under the
 ``docs`` directory