// set up a simple "hello world" routing
$di->get('router_map')->add('home', '/', array(
    'values' => array(
        'controller' => 'hello',
        'action' => 'world',
    ),
));

// map the 'hello_world' controller value a particular class
$di->params['Aura\Web\ControllerFactory']['map']['hello'] = 'Aura\Framework\Web\Hello\Page';