Merge pull request #107 from phpguru/issue/106-outcome-details

Adding a getOutcome method to Message\Response to solve Issue 106

src/Message/Response.php

@@ -55,13 +55,29 @@ public function isSuccessful()
      */
     public function getChargeReference()
     {
-        if (isset($this->data['object']) && $this->data['object'] == 'charge') {
+        if (isset($this->data['object']) && 'charge' === $this->data['object']) {
             return $this->data['id'];
         }
 
         return null;
     }
 
+    /**
+     * Get the outcome of a charge from the response
+     *
+     * @return array|null
+     */
+    public function getOutcome()
+    {
+        if (isset($this->data['object']) && 'charge' === $this->data['object']) {
+            if (isset($this->data['outcome']) && !empty($this->data['outcome'])) {
+                return $this->data['outcome'];
+            }
+        }
+
+        return null;
+    }
+
     /**
      * Get the transaction reference.
      *