team-post-type.php

<?php
/**
 * Plugin Name:     Team Members
 * Plugin URI:      PLUGIN SITE HERE
 * Description:     PLUGIN DESCRIPTION HERE
 * Author:          YOUR NAME HERE
 * Author URI:      YOUR SITE HERE
 * Text Domain:     team-members
 * Domain Path:     /languages
 * Version:         0.1.0
 *
 * @package         Team_Members
 */

// Your code starts here.
// include plugin_dir_path( __FILE__ ) ."post-types/team.php";


add_action( 'init', 'team_post_type' );
function team_post_type(){

    register_post_type('team',
		array(
			'labels'      => array(
                    'name'          => __('Teams', 'team-members'),
                    'singular_name' => __('Team', 'team-members'),
                ),
            'public'      => true,
            'has_archive' => true,
            'supports' => array('title', 'comments', 'thumbnail') ,
		)
	);

    register_taxonomy( 
        'department', 
        'team', 
        array(
            'hierarchical'      => true,
        ) 
    );

}