[totem] AppData: Mark as unremovable in GNOME Software

[Richard Hughes <rhughes src gnome org>]

commit ccd2ba31f71ede9affb9fb12f3ae630d5ccfdc7e
Author: Richard Hughes <richard hughsie com>
Date:   Mon Mar 28 16:12:03 2016 +0100

    AppData: Mark as unremovable in GNOME Software

 data/appdata/org.gnome.Totem.appdata.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/org.gnome.Totem.appdata.xml.in b/data/appdata/org.gnome.Totem.appdata.xml.in
index d3cc087..d2b46ed 100644
--- a/data/appdata/org.gnome.Totem.appdata.xml.in
+++ b/data/appdata/org.gnome.Totem.appdata.xml.in
@@ -31,5 +31,6 @@
   </screenshots>
   <updatecontact>hadess hadess net</updatecontact>
   <project_group>GNOME</project_group>
+  <compulsory_for_desktop>GNOME</compulsory_for_desktop>
   <translation type="gettext">totem</translation>
 </application>