Config in a separate file (fixes #2 and fixes #3)

json.php

@@ -1,6 +1,16 @@
 <?php
-
-$python="/usr/bin/python";
+/**
+ * PHP web interface for youtube-dl (http://rg3.github.com/youtube-dl/)
+ * JSON API
+ *
+ * PHP Version 5.3.10
+ *
+ * @category Youtube-dl
+ * @package  Youtubedl
+ * @author   Pierre Rudloff <rudloff@strasweb.fr>
+ * @license  GNU General Public License http://www.gnu.org/licenses/gpl.html
+ * @link     http://rudloff.pro
+ * */
 require_once 'download.php';
 if (isset($_GET["url"])) {
     header('Content-Type: application/json');