[gnome-nibbles] appdata: specify project_group

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f1d2e138530e96d130e0ca69fcac4f0cd7f5d418
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Feb 9 12:31:54 2014 -0600

    appdata: specify project_group

 data/gnome-nibbles.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/gnome-nibbles.appdata.xml.in b/data/gnome-nibbles.appdata.xml.in
index 105d9f5..23cf6e8 100644
--- a/data/gnome-nibbles.appdata.xml.in
+++ b/data/gnome-nibbles.appdata.xml.in
@@ -27,4 +27,5 @@
  </screenshots>
  <url type="homepage">https://wiki.gnome.org/Apps/Nibbles</url>
  <updatecontact>games_list_at_gnome.org</updatecontact>
+ <project_group>GNOME</project_group>
 </application>