Merge remote-tracking branch 'origin/v4' into v4

Author: Greg Bowler

go.php

@@ -40,7 +40,9 @@
  * Buckle up and enjoy the ride!
  * @link https://github.com/PhpGt/WebEngine/wiki/From-request-to-response
  */
-include("init.php");
+if(file_exists("init.php")) {
+	require("init.php");
+}
 $lifecycle = new Gt\WebEngine\Middleware\Lifecycle();
 try {
 	$lifecycle->start();