[libsigc++2] doap: Add <description>

[Kjell Ahlstedt <kjellahl src gnome org>]

commit e6ffcd68d870d83c0276c8027ea04eca0a1413f4
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Thu Sep 11 13:40:59 2014 +0200

    doap: Add <description>

 libsigc++2.doap |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/libsigc++2.doap b/libsigc++2.doap
index 45b44de..ac695d2 100644
--- a/libsigc++2.doap
+++ b/libsigc++2.doap
@@ -6,6 +6,12 @@
 
   <name xml:lang="en">libsigc++</name>
   <shortdesc xml:lang="en">Typesafe callback framework for C++</shortdesc>
+  <description>libsigc++ implements a typesafe callback system for standard C++.
+It allows you to define signals and to connect those signals to any
+callback function, either global or a member function, regardless of
+whether it is static or virtual.
+
+libsigc++ is used by glibmm and gtkmm to wrap Glib and GTK+ signals.</description>
   <homepage rdf:resource="http://www.gtkmm.org/"; />
   <bug-database rdf:resource="http://bugzilla.gnome.org/browse.cgi?product=libsigc%2B%2B"; />
   <mailing-list rdf:resource="mailto:libsigc-list gnome org" />