embed gist shortcode

gist-shortcode.php

function gist_shortcode($atts, $content = NULL) {
        extract( shortcode_atts( array(
            'id'    => '',
            'title' => ''
           
        ), $atts ) );

    if (empty ($id) )
        return;

    $gist = '<div class="github-gist-block">';
    
    if(!empty($title))
        $gist .= '<h4>'.$title.'</h4>';

    $gist .= '<script src="https://gist.github.com/'.$id.'.js"></script>';
    $gist .= '</div>';

    // now send it all back
    return $gist;
}

add_shortcode ( 'gist', 'gist_shortcode');

/* USAGE
the ID is found in the URL of the gist. For example, this one is https://gist.github.com/gists/3812565/
[gist id="3812565"]

You can add an optional title to show up above the block
[gist id="3812565" title="My Gist Title"]

without the ID present, nothing will fire.
*/