[pitivi] about: add important contributors

[Mathieu Duponchelle <mathieudu src gnome org>]

commit 91bf8ce1517a1feec6231fc94517b5ef39ab232f
Author: Lubosz Sarnecki <lubosz gmail com>
Date:   Tue Aug 6 15:47:32 2013 +0200

    about: add important contributors

 pitivi/mainwindow.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index ed7877b..d98f6bc 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -744,6 +744,7 @@ class PitiviMainWindow(Gtk.Window, Loggable):
         authors = [_("Current maintainers:"),
                    "Jean-François Fortin Tam <nekohayo gmail com>",
                    "Thibault Saunier <thibault saunier collabora com>",
+                   "Mathieu Duponchelle <mduponchelle1 gmail com>",
                    "",
                    _("Past maintainers:"),
                    "Edward Hervey <bilboed bilboed com>",