Merge pull request sendgrid#30 from ProZsolt/master

Disable CURLOPT_FAILONERROR

Author: Matt Bernier

lib/Client.php

@@ -152,6 +152,7 @@ public function makeRequest($method, $url, $body = null, $headers = null, $retry
             CURLOPT_HEADER => 1,
             CURLOPT_CUSTOMREQUEST => strtoupper($method),
             CURLOPT_SSL_VERIFYPEER => false,
+            CURLOPT_FAILONERROR => false,
         ] + $this->curlOptions);
 
         if (isset($headers)) {