register post type and taxonomy code

/* Custom post type Applications code by WPGuru.in */
add_action('init', 'apps_register');

function apps_register() {

    $labels = array(
        'name' => _x('Applications', 'post type general name'),
        'singular_name' => _x('Application', 'post type singular name'),
        'add_new' => _x('Add New', 'Application'),
        'add_new_item' => __('Add Application'),
        'edit_item' => __('Edit Application'),
        'new_item' => __('New Application'),
        'view_item' => __('View Application'),
        'search_items' => __('Search Application'),
        'not_found' =>  __('Nothing found'),
        'not_found_in_trash' => __('Nothing found in Trash'),
        'parent_item_colon' => ''
    );

    $args = array(
        'labels' => $labels,
        'public' => true,
        'publicly_queryable' => true,
        'show_ui' => true,
        'query_var' => true,
        'menu_icon' => get_stylesheet_directory_uri() . '/article16.png',
        'rewrite' => true,
        'capability_type' => 'post',
        'hierarchical' => false,
        'menu_position' => null,
        'supports' => array('')
      );

    register_post_type( 'apps' , $args );
}

function apptypes_init() {
    // create a new taxonomy
    register_taxonomy(
        'apptypes',
        'apps',
        array(
            'hierarchical' => true,
            'label' => __( 'Types' ),
            'sort' => true,
            'args' => array( 'orderby' => 'term_order' ),
            'rewrite' => array( 'slug' => 'types' )
        )
    );
}
add_action( 'init', 'apptypes_init' );