[vino] Update NEWS for 3.1.91 release

[David King <davidk src gnome org>]

commit a839b1a1b69ade713d7b5aaf94dc5b1a8e203cfc
Author: David King <amigadave amigadave com>
Date:   Mon Sep 5 18:28:30 2011 +0200

    Update NEWS for 3.1.91 release

 NEWS |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index c7726b0..12918f2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,21 @@
+Vino 3.1.91
+===========
+
+David King (4):
+      Post-release version bump to 3.1.91
+      Use new location for Mallard help, bug 657927
+      Make all targets use compiler warning flags
+      Update NEWS for 3.1.91 release
+
+Dr.T.Vasudevan (1):
+      updated Tamil translation
+
+Og B. Maciel (1):
+      Updated Brazilian Portuguese translation.
+
+Yuri Myasoedov (1):
+      Updated Russian translation
+
 Vino 3.1.90
 ===========