WordPress CMB2 Image

cmb2-image.php

<?php
	$cmb->add_field( 
	array(
		'name' => __( '[CHANGEME-name]', '[CHANGEME-localization]' ),
		'id' => '[CHANGEME-id]',
		'desc' => __( '[CHANGEME-description]', '[CHANGEME-localization]' ),
		'type' => 'file',
		'options'    => array(
			'url' => false,
		),
		'query_args' => array(
			'type' => array(
				'image/gif',
				'image/jpeg',
				'image/png',
			),
		),
	)
);