Add namespace support

[zachborboa]

No description provided.

[leeuweriq]

Yes please. When using in a namespace manner, the instantiation of the Curl class returns nothing.

[zborboa-g]

Possible implementation and usage.

<?php
namespace Curl;

class Curl
{
}

<?php
use \Curl\Curl;

$curl = new Curl();
$curl->get('https://www.example.com/');

[zachborboa]

Fixed in 360058c.