/**
  * Pass in an array of directories to scan
  */
 public static function scan($dirs = NULL)
 {
     self::instance();
     if ($dirs !== NULL) {
         self::$scan = array_filter(array_unique($dirs), function ($path) {
             return realpath($path);
         });
     } else {
         return self::$scan;
     }
 }
<?php

//REQUIRED CONFIG FILES
require_once 'dirs.php';
require_once $dirs[$current_hostname]['rs'] . 'RocketSled/rocket_sled.class.php';
//IF YOU HAVE ANY AUTOLOADS TO INCLUDE THAT AREN'T AUTOMATICALLY COVERED
//BY RocketSled OR NEED TO BE PERFORMED BEFORE RocketSled REGISTERS
//NB: USING include_once HERE SO WE CAN USE THE SAME CONFIG FILE WHEN
//    RUNNING install.php
include_once $dirs[$current_hostname]['rs'] . 'DataBank/data_bank.class.php';
//TELL THE RocketSled AUTOLOADER WHERE TO LOOK FOR STUFF
RocketSled::scan($dirs[$current_hostname]);