[gnome-chess] Add missing news entry for engines.conf change

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9fa42f3dbd30ff6eadc2e4546ac48ab104c13bee
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Feb 17 08:29:01 2014 -0600

    Add missing news entry for engines.conf change

 NEWS |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 9457732..314cd69 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+Addendum for 3.11.90:
+
+It was neglected to mention that engines.conf can now be overridden on a per-
+user basis by placing the file in XDG_CONFIG_DIR/gnome-chess (i.e.
+~/.config/gnome-chess/engines.conf)
+
 3.11.90 - February 16, 2014
 ===========================