Fix for issue: No merchantid #11. (take 2) (#13)

* Add header to fix issue #11.

* Add header to fix issue #11.

* PSR2.

* PSR2.

Author: noud

src/Message/CompletePurchaseRequest.php

@@ -49,7 +49,14 @@ public function getTransactionReference()
     public function sendData($data)
     {
         if ($data['trxid']) {
-            $httpResponse = $this->httpClient->request('POST', $this->endpoint, [], http_build_query($data));
+            $httpResponse = $this->httpClient->request(
+                'POST',
+                $this->endpoint,
+                [
+                    'Content-Type' => 'application/x-www-form-urlencoded'
+                ],
+                http_build_query($data)
+            );
             return $this->response = new CompletePurchaseResponse($this, $this->parseXmlResponse($httpResponse));
         } else {
             $data = array('transaction' => (object) $this->httpRequest->query->all());

src/Message/PurchaseRequest.php

@@ -209,7 +209,14 @@ protected function getItemData()
      */
     public function sendData($data)
     {
-        $httpResponse = $this->httpClient->request('POST', $this->endpoint, [], http_build_query($data));
+        $httpResponse = $this->httpClient->request(
+            'POST',
+            $this->endpoint,
+            [
+                'Content-Type' => 'application/x-www-form-urlencoded'
+            ],
+            http_build_query($data)
+        );
 
         return $this->response = new PurchaseResponse($this, $this->parseXmlResponse($httpResponse));
     }