[gnome-backgrounds] Update version number and NEWS for 3.15.90

[Thomas Wood <thos src gnome org>]

commit fb2b5191fe7c0c6aa031fad68a5f401e17d07515
Author: Thomas Wood <thos gnome org>
Date:   Mon Feb 16 16:50:58 2015 +0000

    Update version number and NEWS for 3.15.90

 NEWS         |   12 ++++++++++++
 configure.ac |    2 +-
 2 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index bfda9c7..fe60933 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+===============
+Version 3.15.90
+===============
+
+* Release for GNOME 3.15.90
+
+Updated translations:
+
+  Inaki Larranaga Murgoitio (eu)
+  Muhammet Kara (tr)
+
+
 ==============
 Version 3.15.2
 ==============
diff --git a/configure.ac b/configure.ac
index 53fc3c1..008766e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT([gnome-backgrounds],
-        [3.15.2],
+        [3.15.90],
         [http://bugzilla.gnome.org/browse.cgi?product=gnome-backgrounds],
         [gnome-backgrounds])