Slender apps are created in exactly the same way as Slim applications. The only difference is the existance of the extra configuration options.
// This specific config is redundant, as all
// the values are Slender defaults, so you could just
// skip the config alltogether
$config = array(
'config' => array(
'autoload' => array('./config'),
'cache' => './data/cache/config'
),
'viewPaths' => array('./view'),
'moduleDirs' => array('./module'),
);
$app = new Slender\App($config);
$app->run();