application/modules/install/config/routes.php
<?php if (! defined('BASEPATH')) { exit('No direct script access allowed');
}
/*
| -------------------------------------------------------------------------
| URI ROUTING
| -------------------------------------------------------------------------
*/
$route['install'] = 'install/index';
$route['install/step_1'] = 'install/step_1';
$route['install/step_2'] = 'install/step_2';
$route['install/done'] = 'install/done';
$route['install/install/done'] = 'install/done';