Update repo readme licence details to match readme in docs (#101)

Author: paulsimonandrews

README.md

@@ -37,10 +37,10 @@ THIS INFORMATION IS LICENSED UNDER THE CONDITIONS OF THE OPEN GOVERNMENT LICENCE
 
 The following attribution statement MUST be cited in your products and applications when using this information.
 
->Contains public sector information licensed under the Open Government license v3
+>Contains public sector information licensed under the Open Government Licence v3.0.
 
 ### About the license
 
-The Open Government Licence (OGL) was developed by the Controller of Her Majesty's Stationery Office (HMSO) to enable information providers in the public sector to license the use and re-use of their information under a common open licence.
+The Open Government Licence (OGL) v3.0 was developed by the The National Archives to enable information providers in the public sector to license the use and re-use of their information under a common open licence.
 
 It is designed to encourage use and re-use of information freely and flexibly, with only a few conditions.