[gnome-weather] Add missing data to the AppData file

[Richard Hughes <rhughes src gnome org>]

commit 71b546ada3a34236242c85a25b3643a7766469c5
Author: Richard Hughes <richard hughsie com>
Date:   Sat Jan 23 18:09:21 2016 +0000

    Add missing data to the AppData file

 data/org.gnome.Weather.Application.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/org.gnome.Weather.Application.appdata.xml.in 
b/data/org.gnome.Weather.Application.appdata.xml.in
index 610c2eb..1b5e3c1 100644
--- a/data/org.gnome.Weather.Application.appdata.xml.in
+++ b/data/org.gnome.Weather.Application.appdata.xml.in
@@ -28,6 +28,7 @@
       typing its name in the Activities Overview.
     </_p>
   </description>
+  <project_group>GNOME</project_group>
   <screenshots>
     <screenshot type="default">
       <image width="1500" 
height="1130">https://git.gnome.org/browse/gnome-weather/plain/misc/screenshots/city-view.png</image>