moveScriptsToFooter.php

/**
 * Load Enqueued Scripts in the Footer
 *
 * Automatically move JavaScript code to page footer, speeding up page loading time.
 */
function footer_enqueue_scripts() 
{

    remove_action('wp_head', 'wp_print_scripts');
    remove_action('wp_head', 'wp_print_head_scripts', 9);
    remove_action('wp_head', 'wp_enqueue_scripts', 1);
    add_action('wp_footer', 'wp_print_scripts', 5);
    add_action('wp_footer', 'wp_enqueue_scripts', 5);
    add_action('wp_footer', 'wp_print_head_scripts', 5);
}

add_action('after_setup_theme', 'footer_enqueue_scripts');