Merge pull request #120 from rgieseke/patch-1

Update to 2020

README.md

@@ -33,7 +33,7 @@ Tutorials can be found in the form of markdown files in the repository:
 https://github.com/remindmodel/remind/tree/develop/tutorials
 
 ## COPYRIGHT
-Copyright 2006-2019 Potsdam Institute for Climate Impact Research (PIK)
+Copyright 2006-2020 Potsdam Institute for Climate Impact Research (PIK)
 
 ## LICENSE
 This program is free software: you can redistribute it and/or modify