Update README.txt year

Author: silvakid

README.txt

@@ -7,7 +7,7 @@ copy of the software is released under the version 2 of
 the GNU General Public License. MySQL Connector/C++ is
 brought to you by Oracle.
 
-Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
+Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
 
 License information can be found in the COPYING file.