Merge pull request #15 from delatbabel/update-error-code

Update error code

README.md

@@ -9,6 +9,10 @@
 [Omnipay](https://github.com/thephpleague/omnipay) is a framework agnostic, multi-gateway payment
 processing library for PHP 5.3+. This package implements [Pin](https://pin.net.au/) support for Omnipay.
 
+[Pin Payments](https://pin.net.au/) is an Australian all-in-one payment system, allowing you
+to accept multi-currency credit card payments without a security
+deposit or a merchant account.
+
 ## Installation
 
 Omnipay is installed via [Composer](http://getcomposer.org/). To install, simply add it

src/Message/Response.php

@@ -86,4 +86,11 @@ public function getMessage()
             return $this->data['error_description'];
         }
     }
+
+    public function getCode()
+    {
+        if (isset($this->data['error'])) {
+            return $this->data['error'];
+        }
+    }
 }