Merge pull request #1 from RPillz/master

Bugfix in Postmark adapter - unknown PHP function array_get()

src/Adapters/Postmark.php

@@ -39,7 +39,7 @@ public function getAction()
             return $this->eventMap[ Arr::get($this->payload, 'Type') ];
         }
 
-        return array_get($this->eventMap, Arr::get($this->payload, 'RecordType'));
+        return Arr::get($this->eventMap, Arr::get($this->payload, 'RecordType'));
     }
 
     /**