Update README.md

README.md

@@ -3,4 +3,8 @@ DECC-git
 
 Various stats scripts for manipulating and analysing data released by the UK Department for Energy & Climate Change
 
+Unless there is a specific license notice in the relevant folder or script, the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license applies
+
+http://creativecommons.org/licenses/by-nc/4.0/
+
 YMMV