[gnome-logs] Update NEWS for 3.15.91 release

[David King <davidk src gnome org>]

commit 9383b9740f86a322cb18b55e8bbcfd9459454e55
Author: David King <davidk gnome org>
Date:   Mon Mar 2 23:27:57 2015 +0000

    Update NEWS for 3.15.91 release

 NEWS         |    7 +++++++
 configure.ac |    2 +-
 2 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 4190d93..8551e4e 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+GNOME Logs 3.15.91
+==================
+
+* on-demand loading of journal entries from Lars Uebernickel
+* updates to Chinese (Taiwan), Kazakh, Ukrainian, Greek and Lithuanian
+  translations
+
 GNOME Logs 3.15.90
 ==================
 
diff --git a/configure.ac b/configure.ac
index 7ed8451..e212446 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT([Logs],
-        [3.15.90],
+        [3.15.91],
         [davidk gnome org],
         [gnome-logs],
         [https://wiki.gnome.org/Apps/Logs])