[gvfs] Update NEWS for 1.29.91 release

[Ondrej Holy <oholy src gnome org>]

commit 1b6de25d8952f2db0e7531e1c02a85099898a487
Author: Ondrej Holy <oholy redhat com>
Date:   Mon Aug 29 17:17:31 2016 +0200

    Update NEWS for 1.29.91 release

 NEWS |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 114bbe6..ad4da4d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+Major changes in 1.29.91
+========================
+* dav: Various mount operation fixes
+* Several smaller bugfixes
+* Translation updates
+
 Major changes in 1.29.90
 ========================
 * build: Use upstream gettext instead intltool