Merge pull request #19 from barryvdh/iscancelled

Add isCancelled to ResponseInterface

Author: greydnls

src/Omnipay/Common/Message/AbstractResponse.php

@@ -35,6 +35,11 @@ public function isTransparentRedirect()
         return false;
     }
 
+    public function isCancelled()
+    {
+        return false;
+    }
+
     public function getData()
     {
         return $this->data;

src/Omnipay/Common/Message/ResponseInterface.php

@@ -28,6 +28,13 @@ public function isSuccessful();
      */
     public function isRedirect();
 
+    /**
+     * Is the transaction cancelled by the user?
+     *
+     * @return boolean
+     */
+    public function isCancelled();
+
     /**
      * Response Message
      *