add data collector for client class

Client.php

@@ -0,0 +1,21 @@
+<?php
+namespace FOQ\ElasticaBundle;
+
+use Elastica_Client;
+
+/**
+ * @author Gordon Franke <info@nevalon.de>
+ */
+class Client extends Elastica_Client
+{
+    public function setLogger($logger)
+    {
+        $this->logger = $logger;
+    }
+
+    public function request($path, $method, $data = array()) {
+        $this->logger->logQuery($path, $method, $data);
+
+        return parent::request($path, $method, $data);
+    }
+}