/**
  * FilesLoader - loads required files
  * @return ctFilesLoader
  */
 public static function getFilesLoader()
 {
     if (!self::$filesLoader) {
         self::$filesLoader = new ctFilesLoader();
     }
     return self::$filesLoader;
 }
 /**
  * Includes user css + css from general settings
  */
 function handleCustomCss()
 {
     ctThemeLoader::getFilesLoader()->includeIt(CT_THEME_SETTINGS_MAIN_DIR . '/custom_style.php');
 }
 /**
  * Initializes
  */
 public function initialize()
 {
     //add scripts
     require_once CT_THEME_LIB_DIR . '/shortcodes/ctShortcodeQueryable.class.php';
     //load all shortcodes
     ctThemeLoader::getFilesLoader()->includeOnceByPattern(CT_THEME_SHORTCODE_DIR, '*/*.php');
 }
<?php

require_once get_template_directory() . '/framework/createit/ctThemeLoader.php';
$c = new ctThemeLoader();
$c->setPrepackedChildThemes(array('badassbbq', 'bigsmokebbq', 'coffeecream', 'cupcake', 'pizza', 'ribsndogs', 'seabreeze', 'tacos', 'waffle'));
$c->init('foodtruck');
function roots_setup()
{
    // Make theme available for translation
    load_theme_textdomain('ct_theme', get_template_directory() . '/lang');
    // Add default posts and comments RSS feed links to <head>.
    add_theme_support('automatic-feed-links');
    // Add post thumbnails (http://codex.wordpress.org/Post_Thumbnails)
    add_theme_support('post-thumbnails');
    add_theme_support('post-formats', array('aside', 'gallery', 'link', 'image', 'quote', 'video', 'audio'));
    add_theme_support('custom-header');
    add_theme_support('custom-background');
    //add size for post items
    add_image_size('thumb_square', 240, 210, true);
    //add size for featured image
    add_image_size('featured_image', 541, 256, true);
    //menu box
    add_image_size('product_thumb', 54, 54, true);
    //product box
    add_image_size('product_box', 260, 132, true);
    //product box seabreeze
    add_image_size('product_box_2', 174, 174, true);
    //gallery
    add_image_size('gallery_thumb_2', 570, 350, true);
    add_image_size('gallery_thumb_3', 370, 227, true);
    add_image_size('gallery_thumb_4', 270, 166, true);