Fix php-curl-class#554: Add example for making a request through a SOCKS 5 proxy

Author: zachborboa

examples/proxy_socks5.php

@@ -0,0 +1,13 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use \Curl\Curl;
+
+// If needed, start a SOCKS 5 proxy tunnel:
+//   $ ssh -D 8080 -C -N -v user@example.com
+
+$curl = new Curl();
+$curl->setProxy('127.0.0.1:8080');
+$curl->setProxyType(CURLPROXY_SOCKS5);
+$curl->get('https://httpbin.org/ip');
+var_dump($curl->response);