[accerciser] Add a missing tag to the AppData file

[Richard Hughes <rhughes src gnome org>]

commit dea54d84845490063db2057eb46f0234b8a03662
Author: Richard Hughes <richard hughsie com>
Date:   Mon Jan 25 13:31:46 2016 +0000

    Add a missing tag to the AppData file

 org.gnome.accerciser.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/org.gnome.accerciser.appdata.xml.in b/org.gnome.accerciser.appdata.xml.in
index 87390b5..341bc25 100644
--- a/org.gnome.accerciser.appdata.xml.in
+++ b/org.gnome.accerciser.appdata.xml.in
@@ -21,4 +21,5 @@
   <screenshot 
type="default">https://git.gnome.org/browse/accerciser/plain/help/C/figures/api_browser.png</screenshot>
   </screenshots>
   <updatecontact>daniel mustieles gmail com</updatecontact>
+  <project_group>GNOME</project_group>
 </application>