Load Espresso Grid Template's assets on every front-end page of the website.

espresso_grid_scripts.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action( 'wp_enqueue_scripts', 'my_add_ee_grid_assets' );
function my_add_ee_grid_assets() {
    wp_enqueue_style(
        'espresso_grid_template',
        EE_GRID_TEMPLATE_URL . 'css' . DS . 'espresso_grid_template.css'
    );
    wp_enqueue_script(
        'espresso_grid_template',
        EE_GRID_TEMPLATE_URL . 'scripts' . DS . 'espresso_grid_template.js',
        array('jquery'),
        EE_GRID_TEMPLATE_VERSION,
        true
    );
}