Add initial sigrok-meter program.

This is just a "Hello world" program which shows an empty window.

diff --git a/sigrok-meter b/sigrok-meter
new file mode 100755 (executable)
index 0000000..3b018bd
--- /dev/null
+++ b/sigrok-meter
@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+##
+## This file is part of the sigrok-meter project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+from gi.repository import Gtk
+
+win = Gtk.Window()
+win.connect("delete-event", Gtk.main_quit)
+win.show_all()
+Gtk.main()
+