remove copyright year

Author: freyfogle

README.md

@@ -21,6 +21,6 @@ Alternatively to work on the source:
 
 ## COPYRIGHT AND LICENCE
 
-Copyright 2016 OpenCage Data Ltd <cpan@opencagedata.com>
+Copyright OpenCage Data Ltd <cpan@opencagedata.com>
 
 This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.16 or, at your option, any later version of Perl 5 you may have available.