gistfile1.aw

<?php
return array(
    'di'     => array(
        'instance'  => array(
            'aliases' => array(

				// services
	            'facebook_service' => 'Facebook\Service\Facebook'
            ),

            'preferences' => array(
	            'Facebook\Service\Facebook' => 'facebook_service'
            ),

	        'facebook_service' => array(
		        'parameters'    => array(
			        'config'   => array(
						'appId' => 123412709384719,
				        'secret' => 'foo'
			        )
		        )
	        ),

	        'Zend\View\HelperLoader' => array(
		        'parameters' => array(
			        'map' => array(
				        'facebook' => 'Facebook\View\Helper\Facebook',
			        )
		        )
	        ),

            'Facebook\View\Helper\Facebook' => array(
                'parameters' => array(
                    'service' => 'facebook_service'
                )
            ),
        )
    )
);