Add Snapshot/Status implementation

Forgot to include this in the last commit :s

src/Elasticsearch/Endpoints/Snapshot/Status.php

@@ -0,0 +1,108 @@
+<?php
+/**
+ * User: zach
+ * Date: 5/7/14
+ * Time: 12:04 PM
+ */
+
+namespace Elasticsearch\Endpoints\Snapshot;
+
+use Elasticsearch\Endpoints\AbstractEndpoint;
+use Elasticsearch\Common\Exceptions;
+
+/**
+ * Class Status
+ *
+ * @category Elasticsearch
+ * @package Elasticsearch\Endpoints\Snapshot
+ * @author   Zachary Tong <[email protected]>
+ * @license  http://www.apache.org/licenses/LICENSE-2.0 Apache2
+ * @link     http://elasticsearch.org
+ */
+
+class Status extends AbstractEndpoint
+{
+    // A comma-separated list of repository names
+    private $repository;
+
+    // A comma-separated list of snapshot names
+    private $snapshot;
+
+
+    /**
+     * @param $repository
+     *
+     * @return $this
+     */
+    public function setRepository($repository)
+    {
+        if (isset($repository) !== true) {
+            return $this;
+        }
+
+        $this->repository = $repository;
+        return $this;
+    }
+
+
+    /**
+     * @param $snapshot
+     *
+     * @return $this
+     */
+    public function setSnapshot($snapshot)
+    {
+        if (isset($snapshot) !== true) {
+            return $this;
+        }
+
+        $this->snapshot = $snapshot;
+        return $this;
+    }
+
+
+    /**
+     * @throws \Elasticsearch\Common\Exceptions\RuntimeException
+     * @return string
+     */
+    protected function getURI()
+    {
+        if (isset($this->snapshot) === true && isset($this->repository) !== true) {
+            throw new Exceptions\RuntimeException(
+                'Repository param must be provided if snapshot param is set'
+            );
+        }
+
+        $repository = $this->repository;
+        $snapshot   = $this->snapshot;
+        $uri        = "/_snapshot/_status";
+
+        if (isset($repository) === true) {
+            $uri = "/_snapshot/$repository/_status";
+        } elseif (isset($repository) === true && isset($snapshot) === true) {
+            $uri = "/_snapshot/$repository/$snapshot/_status";
+        }
+
+        return $uri;
+    }
+
+
+    /**
+     * @return string[]
+     */
+    protected function getParamWhitelist()
+    {
+        return array(
+            'master_timeout',
+        );
+    }
+
+
+    /**
+     * @return string
+     */
+    protected function getMethod()
+    {
+        return 'GET';
+    }
+}