copyrights update

Author: morinpa

COPYING

@@ -1,7 +1,8 @@
 Copyright (c) 2009-2013 Bitcoin Developers
 Copyright (c) 2011-2013 Litecoin Developers
 Copyright (c) 2012-2014 Peercoin Developers
-Copyright (c) 2014 Quebecoin Developers
+Copyright (c) 2014      Darkcoin Developers
+Copyright (c) 2014-2018 Quebecoin Developers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal