[perl-Gtk2] MANIFEST: added missing gtk-demo files

[Brian Manning <bmanning src gnome org>]

commit 3e0eb742a9c9e45061e13f65443abd06881a99fc
Author: Brian Manning <bmanning src gnome org>
Date:   Sun Aug 9 18:02:46 2015 -0700

    MANIFEST: added missing gtk-demo files

 MANIFEST |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/MANIFEST b/MANIFEST
index 6d628d0..447a0cd 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -50,10 +50,13 @@ gdk.typemap
 gtk-demo/alphatest.png
 gtk-demo/apple-red.png
 gtk-demo/appwindow.pl
+gtk-demo/assistant.pl
 gtk-demo/background.jpg
 gtk-demo/button_box.pl
 gtk-demo/changedisplay.pl
 gtk-demo/colorsel.pl
+gtk-demo/combobox.pl
+gtk-demo/demo.ui
 gtk-demo/dialog.pl
 gtk-demo/drawingarea.pl
 gtk-demo/editable_cells.pl