[gnome-backgrounds] prepare for 3.18.0

[Jakub Steiner <jimmac src gnome org>]

commit 49bd99bdbe64cd1d68179537e0e37fc13054fe19
Author: Jakub Steiner <jimmac gmail com>
Date:   Tue Sep 22 15:49:00 2015 +0200

    prepare for 3.18.0

 NEWS         |    6 ++++++
 configure.ac |    2 +-
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 443c051..a27aaa1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,10 @@
 ==============
+Version 3.18.0
+==============
+
+- translation
+
+==============
 Version 3.17.3
 ==============
 
diff --git a/configure.ac b/configure.ac
index 0885a33..25ea56f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT([gnome-backgrounds],
-        [3.17.3],
+        [3.18.0],
         [http://bugzilla.gnome.org/browse.cgi?product=gnome-backgrounds],
         [gnome-backgrounds])