Yaml Config Service Provider

Yaml config service provider for Silex.

Currently supports imports statements and parameters substitution. See an example from Silex Enhanced.

...
$app->register(
    new \Fluency\Silex\Provider\YamlConfigServiceProvider(
        array(
            '%base_path%' => BASEPATH, '%log_path%' => BASEPATH . '/var/logs',
            '%cache_path%' => BASEPATH . '/var/cache'
        )
    ),
    array(
        'config.dir' => BASEPATH . '/app/Resources/config',
        'config.files' => array('application.yml', 'routing.yml', 'security.yml'),
    )
);
...