Add endpoint index and type getters (#557)

Author: ewgRa

src/Elasticsearch/Endpoints/AbstractEndpoint.php

@@ -95,6 +95,14 @@ public function getOptions()
         return $this->options;
     }
 
+    /**
+     * @return string|null
+     */
+    public function getIndex()
+    {
+        return $this->index;
+    }
+
     /**
      * @param string $index
      *
@@ -116,6 +124,14 @@ public function setIndex($index)
         return $this;
     }
 
+    /**
+     * @return string|null
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
     /**
      * @param string $type
      *