Shortcode for WP Option Tree

option_tree_shortcode.php

<?php
/**
 * Shortcode to go along with my Option Tree 
 * helper functions. See those here:
 * https://gist.github.com/2627998
 *
 * <samp>[theme_option name="home_text"]</samp>
 *
 * @param array Array of attributes passed from the shortcode.
 * @return string|null
 */
if(function_exists('get_theme_option')
{
        add_shortcode('theme_option', 'theme_option_shortcode');
        function theme_option_shortcode($atts)
        {
                extract(shortcode_atts(array(
                        'name' => null
                ), $atts));
                if($name !== null)
                {
                        $name = get_theme_option($name);
                }
                return $name;
        }
}