Update README.md (#751)

Author: rnorth

README.md

@@ -14,9 +14,9 @@ See [LICENSE](LICENSE).
 
 ## Copyright
 
-Copyright (c) 2015, 2016 Richard North and other authors.
+Copyright (c) 2015 - 2018 Richard North and other authors.
 
-MS SQL Server module is (c) 2017 - 2019 G DATA Software AG and other authors.
+MS SQL Server module is (c) 2017 - 2018 G DATA Software AG and other authors.
 
 Hashicorp Vault module is (c) 2017 Capital One Services, LLC and other authors.