configuration file are incorrect

[stefanorg]

with the new version using class \Zend\Mail\Transport\Factory to create the transport class, you need to change the configuration file from this:

    'transport_class' => 'Zend\Mail\Transport\File',

    'options_class' => 'Zend\Mail\Transport\FileOptions',

    'transport_options' => array(
        'path'              => 'data/mail/',
    ),

to this

    'type' => 'file',
    'options' => [
        'path' => 'data/mail'
    ],

this isn't still backward compatible with zf 2.2 like noticed in issue #18