headers: update copyright

API New Year

Change-Id: I569d5bb88fefbcc0cf312f8433d94deadc12698e
Tuleap: #223
diff --git a/instantmessagingwidget.h b/instantmessagingwidget.h
index 8bf6455..ddbea73 100644
--- a/instantmessagingwidget.h
+++ b/instantmessagingwidget.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- * Copyright (C) 2015 by Savoir-faire Linux                                *
+ * Copyright (C) 2015-2016 by Savoir-faire Linux                                *
  * Author: Edric Ladent Milaret <edric.ladent-milaret@savoirfairelinux.com>*
  *                                                                         *
  * This program is free software; you can redistribute it and/or modify    *