Custom init for bolt

AppInit.php

<?php
namespace Mapple\Bolt;

use Bolt;
use Mapple\Bolt\CustomTranslationsProvider;
use SilexMtHaml\MtHamlServiceProvider;

Class AppInit {

    public function __construct ($path) {
        $this->path = $path;
    }

    public function run() {
        $vendor_dir = "vendor";
        $app_dir    = "app";
        $src_dir    = "src";
        $web_dir    = "web";
        $upload_dir = "up";
        $site_dir   = "{$src_dir}/Site";
        $res_dir    = "{$site_dir}/Resources";

        $configuration = new Bolt\Configuration\Composer($this->path);
        $configuration->setPath("vendor_dir",             $vendor_dir);
        $configuration->setPath("cache",                  "{$app_dir}/vars/cache");
        $configuration->setPath("logs",                   "{$app_dir}/vars/logs");
        $configuration->setPath("database",               "{$app_dir}/database");
        $configuration->setPath("extensionspath",         "{$app_dir}/extensions");

        $configuration->setPath("themebase",              "{$res_dir}");
        $configuration->setPath("config",                 "{$res_dir}/config");
        $configuration->setPath("extensionsconfig",       "{$res_dir}/config/extensions");
        $configuration->setPath("translations",           "{$res_dir}/translations");

        $configuration->setPath("web",                    "{$web_dir}");
        $configuration->setPath("files",                  "{$web_dir}/{$upload_dir}");
        $configuration->setPath("thumbs",                 "/{$upload_dir}/thumbs");


        $configuration->getVerifier()->disableApacheChecks();
        $configuration->verify();

        $app = new Bolt\Application(array("resources"=>$configuration));
        $app->initialize();

        $app->mount($configuration->getPath('thumbs'), new \Bolt\Thumbs\ThumbnailProvider());
        $app->register(new MtHamlServiceProvider());
        $app->register(new CustomTranslationsProvider());

        $app->run();
    }

}

index.php

<?php
require_once "../vendor/autoload.php";

$app = new \Mapple\Bolt\AppInit(dirname(__DIR__));

$app->run();