Extra check for vendor 3 folders up.

Failure to check up *3* folders when running the binary from
chrisboulton/php-resque/bin/ results in never finding the autoload
file when it tries to load up the composer dependencies.

Author: JesseObrien

bin/resque

@@ -4,6 +4,7 @@
 // Find and initialize Composer
 $files = array(
   __DIR__ . '/../../vendor/autoload.php',
+  __DIR__ . '/../../../autoload.php',
   __DIR__ . '/../../../../autoload.php',
   __DIR__ . '/../vendor/autoload.php',
 );