[gdm] NEWS: update for release

[Tim Lunn <timl src gnome org>]

commit d1c3cbde4d0f810731aebe1233ad47f80e08ef5c
Author: Tim Lunn <tim feathertop org>
Date:   Tue Apr 19 15:03:32 2016 +1000

    NEWS: update for release

 NEWS |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 932cb2b..6d5d36d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,12 @@
 ==============
+Version 3.20.1
+==============
+- Fix passwordless logins on Debian/Ubuntu
+- Don't allow passwordless XDMCP logins
+- Fix redhat pam configuration
+- Translation updates
+
+==============
 Version 3.20.0
 ==============
 - Translation updates