[gnome-nibbles/wip/vala] Sync with latest NEWS

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 19a8fdd3aa615c86d07ea44c8cd99539c69ecb0f
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sat Sep 5 12:47:55 2015 -0500

    Sync with latest NEWS

 NEWS |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 8840e74..ee56682 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+3.17.90 - August 12, 2015
+=========================
+
+* Add symbolic app icon (Jakub Steiner)
+* Fix typos in documentation (Anders Jonsson)
+* Updated translations
+
 gnome-nibbles 3.15.91.1
 =======================