Support user:pass params in buildUrl

Might as well support the full URL specification while we are fixing things.
With reference to unparse_url found at http://php.net/manual/en/function.parse-url.php#106731

Author: dman-coders

src/Url.php

@@ -415,6 +415,12 @@ protected function buildUrl()
             $url .= $this->info['scheme'].'://';
         }
 
+        $user = isset($this->info['user']) ? $this->info['user'] : '';
+        $pass = isset($this->info['pass']) ? ':' . $this->info['pass']  : '';
+        if ($user || $pass) {
+            $url .= $user . $pass . '@';
+        }
+
         if (isset($this->info['host'])) {
             $url .= $this->info['host'];
         }