example routes

                'home' => array(
                    'type'      => 'Base\Router\Http\SkippableSegment',
                    'may_terminate' => true,
                    'options'   => array(
                        'route'    => '/[:lang/]',
                        'constraints' => array(
                            'lang' => 'en|fr'
                        ),
                        'defaults' => array(
                            'controller' => 'Application\Controller\Index',
                            'action'     => 'index',
                            'lang' => ''
                        ),
                        'skippable' => array(
                            'lang' => true
                        )
                    ),
                    'child_routes' => array(
                        'page-one' => array(
                            'type'      => 'Segment',
                            'may_terminate' => true,
                            'options'   => array(
                                'route'    => 'page-one',
                                'defaults' => array(
                                    'controller' => 'Application\Controller\Index',
                                    'action'     => 'page-one',
                                ),
                            ),
                        ),
                        'page-two' => array(
                            'type'      => 'Segment',
                            'may_terminate' => true,
                            'options'   => array(
                                'route'    => 'page-two',
                                'defaults' => array(
                                    'controller' => 'Application\Controller\Index',
                                    'action'     => 'page-two',
                                ),
                            ),
                            'child_routes' => array(
                                'search' => array(
                                    'type' => 'Literal',
                                    'options' => array(
                                        'route' => '/search',
                                    ),
                                ),
                            ),
                        ),
                    ),
                ),