[gnome-shell] Add description to DOAP file

[Olav Vitters <ovitters src gnome org>]

commit 40dc85d9752fd682b4d9bb3124b84cfd1f3659f8
Author: Olav Vitters <olav vitters nl>
Date:   Sat Mar 26 13:24:29 2011 +0100

    Add description to DOAP file

 gnome-shell.doap |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/gnome-shell.doap b/gnome-shell.doap
index 9b2b5bf..e377e3f 100644
--- a/gnome-shell.doap
+++ b/gnome-shell.doap
@@ -6,6 +6,16 @@
 
   <name xml:lang="en">GNOME Shell</name>
   <shortdesc xml:lang="en">Next generation GNOME desktop shell</shortdesc>
+  <description>Mutter is a window and compositing manager that displays and manages
+your desktop via OpenGL. Mutter combines a sophisticated display engine
+using the Clutter toolkit with solid window-management logic inherited
+from the Metacity window manager.
+
+While Mutter can be used stand-alone, it is primarily intended to be
+used as the display core of a larger system such as GNOME Shell.
+For this reason, Mutter is very extensible via plugins, which
+are used both to add fancy visual effects and to rework the window
+management behaviors to meet the needs of the environment.</description>
   <!--
   <homepage rdf:resource="http://live.gnome.org/GnomeShell"; />
   -->