add simple console command

bin/crawler

@@ -0,0 +1,13 @@
+#!/usr/bin/env php
+
+<?php
+
+if (file_exists(__DIR__.'/../vendor/autoload.php')) {
+    require __DIR__.'/../vendor/autoload.php';
+} else {
+    require __DIR__.'/../../../autoload.php';
+}
+
+$application = new JHodges\Sitemap\ConsoleApplication();
+
+$application->run();