KnpLabs/KnpRadBundle — pull request #89 by davidjegat (2013-05-23 13:37:17+00:00)
Title: Add Configuration Tree building support.

So this is my version of TreeBuilding implementation. Let's take an exemple :

```php
children()
->scalarNode('Foo')
->defaultValue("bar")
->info('This is a fuck*** bar !!')
->end()
->end()
;
}

public function buildContainer(array $config, ContainerBuilder $container)
{
if (isset($config['foo'])) {
$container->addParameter('some.foo', $config['foo']);
}
}
}
```

This is a default Bundle called "App" with an implementation of my version of TreeBuilding simplification. Of course, we can erased this two method from this bundle. This PR don't break the compatibility. Just add the TreeBuilder support.