[gnome-software] Use the experimental compulsory_for_desktop tag in the AppData file

[Richard Hughes <rhughes src gnome org>]

commit 7fcebd927b0dd257dce5ba495837429b3f5619ca
Author: Richard Hughes <richard hughsie com>
Date:   Mon Nov 11 17:06:24 2013 +0000

    Use the experimental compulsory_for_desktop tag in the AppData file

 data/appdata/org.gnome.Software.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/org.gnome.Software.appdata.xml.in b/data/appdata/org.gnome.Software.appdata.xml.in
index 6ed33b6..a10f86b 100644
--- a/data/appdata/org.gnome.Software.appdata.xml.in
+++ b/data/appdata/org.gnome.Software.appdata.xml.in
@@ -26,4 +26,5 @@
   </screenshots>
   <url type="homepage">https://wiki.gnome.org/Design/Apps/Software</url>
   <updatecontact>richard_at_hughsie.com</updatecontact>
+  <compulsory_for_desktop>GNOME</compulsory_for_desktop>
 </application>