Normalizing Reindex name (#466)

Author: dcarbone

src/Elasticsearch/Endpoints/ReIndex.php renamed to src/Elasticsearch/Endpoints/Reindex.php

@@ -5,15 +5,15 @@
 use Elasticsearch\Common\Exceptions;
 
 /**
- * Class ReIndex
+ * Class Reindex
  *
  * @category Elasticsearch
  * @package Elasticsearch\Endpoints *
  * @author   Zachary Tong <zachary.tong@elasticsearch.com>
  * @license  http://www.apache.org/licenses/LICENSE-2.0 Apache2
  * @link     http://elasticsearch.org
  */
-class ReIndex extends AbstractEndpoint
+class Reindex extends AbstractEndpoint
 {
     /**
      * @param array $body