Merge pull request #18 from muskie9/bugfix/responseToStringConversion

BUGFIX GuzzleHttp\Psr7\Response cannot be converted to a string

src/Foxy/FoxyClient/FoxyClient.php

@@ -365,7 +365,7 @@ private function handleException(\Exception $e)
             $response = $e->getResponse();
             $error = array_merge($error, array(
                 "error_code" => $response->getStatusCode(),
-                "response" => (string)$response,
+                "response" => (string)$response->getReasonPhrase(),
                 "error_contents" => (string) $response->getBody()->getContents()
             ));
         }