[office-runner] Add a missing tag to the AppData file

[Richard Hughes <rhughes src gnome org>]

commit 031b17052fe3d5b5f40a27753940ed0047207766
Author: Richard Hughes <richard hughsie com>
Date:   Mon Jan 25 13:11:32 2016 +0000

    Add a missing tag to the AppData file

 src/office-runner.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/office-runner.appdata.xml.in b/src/office-runner.appdata.xml.in
index 43169de..6e1e8b6 100644
--- a/src/office-runner.appdata.xml.in
+++ b/src/office-runner.appdata.xml.in
@@ -22,4 +22,5 @@
     <screenshot 
type="default">https://git.gnome.org/browse/office-runner/plain/src/office-runner-appdata-screenshot.jpg</screenshot>
   </screenshots>
   <updatecontact>hadess hadess net</updatecontact>
+  <project_group>GNOME</project_group>
 </application>