[glib] gsettings-tool: Add --version into general usage

[Ryan Lortie <desrt src gnome org>]

commit d5e2a57741ec13196360b073a04f7929ebdb642e
Author: Jiro Matsuzawa <jmatsuzawa gnome org>
Date:   Thu Aug 29 01:05:29 2013 +0900

    gsettings-tool: Add --version into general usage
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707002

 gio/gsettings-tool.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gio/gsettings-tool.c b/gio/gsettings-tool.c
index 7d9c250..fd6d910 100644
--- a/gio/gsettings-tool.c
+++ b/gio/gsettings-tool.c
@@ -634,6 +634,7 @@ gsettings_help (gboolean     requested,
     {
       g_string_append (string,
       _("Usage:\n"
+        "  gsettings --version\n"
         "  gsettings [--schemadir SCHEMADIR] COMMAND [ARGS...]\n"
         "\n"
         "Commands:\n"