Updates php-domain-parser, fixes #29

[jeremykendall]

See jeremykendall/php-domain-parser#23 for details on fix. That PR in php-domain-parser fixes #29.

[jeremykendall]

This test script demonstrates the fix:

<?php

require './vendor/autoload.php';

$url = new \Purl\Url('http://localhost/');
echo $url . "\n";

Output:

$ php -f test.php
http://localhost/

[jwage]

👍