[mutter] Add description to DOAP file

[Olav Vitters <ovitters src gnome org>]

commit e0ce24b3f5285b664c41487b99dedea569c8e2d3
Author: Olav Vitters <olav vitters nl>
Date:   Thu Mar 24 13:59:56 2011 +0100

    Add description to DOAP file

 mutter.doap |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/mutter.doap b/mutter.doap
index 25c23ac..ff60182 100644
--- a/mutter.doap
+++ b/mutter.doap
@@ -6,6 +6,16 @@
 
   <name xml:lang="en">mutter</name>
   <shortdesc xml:lang="en">Window and compositing manager based on Clutter</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://www.gnome.org/"; />
   -->