Merge pull request #52 from mfrankiewicz/bugfix/improper-value-in-ses…

…sion-data

sets proper value for session data

src/Airbrake/Configuration.php

@@ -75,7 +75,7 @@ protected function initialize()
         }
 
         if ($this->get('sessionData') === null && isset($_SESSION)) {
-            $this->set('sessionData', (array) $_GET);
+            $this->set('sessionData', (array) $_SESSION);
         }
 
         $serverData = $this->get('serverData');