Find vendor autoloader when running from project root

Author: Alex Salguero

bin/phpunit-randomizer

@@ -1,7 +1,7 @@
 #!/usr/bin/env php
 <?php
 
-foreach (array(__DIR__ . '/../../../autoload.php', __DIR__ . '/../vendor/autoload.php') as $file) {
+foreach (array(__DIR__ . '/../../../autoload.php', __DIR__ . '/../vendor/autoload.php', __DIR__ . '/vendor/autoload.php') as $file) {
     if (file_exists($file)) {
         define('PHPUNIT_COMPOSER_INSTALL', $file);
         break;