Added custom path URL and DIR

Example for functions.php

/**
* Initialize the metabox class.
*/
function cmb_initialize_cmb_meta_boxes() {
    if (!class_exists( 'cmb_Meta_Box' )) {
        // Custom path URL
        define( 'CMB_META_BOX_URL', trailingslashit(
get_stylesheet_directory_uri() . '/lib/Custom-Metaboxes-and-Fields-for-
WordPress' ) );

        // Custom path DIR
        define( 'CMB_META_BOX_DIR', trailingslashit( TEMPLATEPATH .
'/lib/Custom-Metaboxes-and-Fields-for-WordPress' ) );

        require_once 'lib/Custom-Metaboxes-and-Fields-for-
WordPress/init.php';
    }
}
add_action( 'init', 'cmb_initialize_cmb_meta_boxes', 9999 );
Updated translation
Updated translation
Updated options of date picker with translation
Removed "Set the defaults if we have any"