[gnome-software] Add missing summary element to the AppStream data

[Matthias Klumpp <mak src gnome org>]

commit 438ed882e77ac718cb8f7dece7ddba4d48a72368
Author: Matthias Klumpp <matthias tenstral net>
Date:   Mon Sep 16 23:28:48 2013 -0700

    Add missing summary element to the AppStream data

 data/gnome-software.appdata.xml |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/gnome-software.appdata.xml b/data/gnome-software.appdata.xml
index ff33909..fb60dea 100644
--- a/data/gnome-software.appdata.xml
+++ b/data/gnome-software.appdata.xml
@@ -2,6 +2,7 @@
 <application>
   <id type="desktop">gnome-software.desktop</id>
   <licence>CC0</licence>
+  <summary>Application manager for GNOME</summary>
   <description>
     <p>
       GNOME Software lets you install, remove and update applications and system