Added proper code for new maintenance mode feature.

app/start/global.php

@@ -53,6 +53,22 @@ App::error(function(Exception $exception, $code)
 	Log::error($exception);
 });
 
+/*
+|--------------------------------------------------------------------------
+| Maintenance Mode Handler
+|--------------------------------------------------------------------------
+|
+| The "down" Artisan command gives you the ability to put an application
+| into maintenance mode. Here, you will define what is displayed back
+| to the user if maintenace mode is in effect for this application.
+|
+*/
+
+App::down(function()
+{
+	return "We'll be right back!";
+});
+
 /*
 |--------------------------------------------------------------------------
 | Require The Filters File