public static function add()
{
parent::add();
self::$facebook_app_id = Installer::getComposerEvent()->getIO()->ask(":: enter your facebook app id: ", "[app_id]");
self::$facebook_api_secret = Installer::getComposerEvent()->getIO()->ask(":: enter your facebook app secret: ", "[app_secret]");
File::replaceContent(Installer::getRootDirConfig() . self::getConfigfile(), "[app_id]", self::getFacebookAppId());
File::replaceContent(Installer::getRootDirConfig() . self::getConfigfile(), "[api_secret]", self::getFacebookApiSecret());
File::addContent(Installer::getRootDirTheme() . "Includes/Footer.ss", "<% include FacebookLoginLink %>", "SilverStripe</a></small>");
Installer::getComposerEvent()->getIO()->write(":: added facebookconnect extension");
}
