[gnome-flashback] NEWS: update version number

[Alberts Muktupāvels <muktupavels src gnome org>]

commit ce39c79bea1953cbd9f73c9c4ace4c1eac6fb429
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Sep 25 21:30:05 2015 +0300

    NEWS: update version number
    
    It was meant to be 3.18.0 not 3.17.2...

 NEWS |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 19e0741..d930038 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-Version 3.17.2
+Version 3.18.0
 ==============
 - Added bluetooth applet. (Alberts Muktupāvels, Balló György)
 - Added power applet. (Alberts Muktupāvels, Balló György)