Adding "autoload" section in composer.json

Hi,
Sorry if i pull request the wrong way, i'm new too GitHub!
It would be usefull to add this to your composer.json in order to avoid "require_once __VENDOR_DIR__ . '/gorg/phpcas/CAS.php' (or such things) in our application :

    "autoload": {
        "files": [
            "CAS.php"
        ]
    }

Regards,
Bertrand