Merge pull request #54 from mmorrisson/master

Add option to not serialize payload.

Author: Jhut89

src/Mailchimp.php

@@ -287,15 +287,15 @@ public static function oauthExchange(
     }
 
     /**
-     * @param $oath_string
+     * @param $oauth_string
      * @return mixed
      * @throws MailchimpException
      */
-    private static function requestAccessToken($oath_string)
+    private static function requestAccessToken($oauth_string)
     {
         $request = self::getStaticRequest();
         $request->setMethod("POST");
-        $request->setPayload($oath_string);
+        $request->setPayload($oauth_string, false);
         $request->setBaseUrl(MailchimpConnection::TOKEN_REQUEST_URL);
 
         $connection = self::getStaticConnection($request);

src/Requests/MailchimpRequest.php

@@ -265,11 +265,14 @@ public function setAuth()
     /**
      * Sets the payload for a request
      * @param mixed $payload
+     * @param boolean $shouldSerialize
      * @throws MailchimpException when cant serialize payload
      */
-    public function setPayload($payload)
+    public function setPayload($payload, $shouldSerialize = true)
     {
-        $payload = $this->serializePayload($payload);
+        if ($shouldSerialize) {
+            $payload = $this->serializePayload($payload);
+        }
         $this->payload = $payload;
     }