copyright date update

Change-Id: Ifb26147e6faf37f5ac4f5ffac582ee069902d382
Reviewed-by: Olivier Soldano <olivier.soldano@savoirfairelinux.com>
diff --git a/po/README b/po/README
index 4efbe30..b211651 100644
--- a/po/README
+++ b/po/README
@@ -10,7 +10,7 @@
 
 Replace the first 3 lines of the generated header with:
 # Gettext PO translation template file for the GNOME client of the Ring project.
-# Copyright (C) 2015-2017 Savoir-faire Linux Inc.
+# Copyright (C) 2015-2018 Savoir-faire Linux Inc.
 # This file is distributed under the same license as the Ring package.
 
 The translation files are expected to be located in the /po dir using the