Merge pull request #14 from jmikola/phplib-87

PHPLIB-87: Remove manual bsonSerialize() call

src/Collection.php

@@ -1312,8 +1312,7 @@ class Collection
         $bulk = new BulkWrite(true);
 
         foreach ($indexes as $index) {
-            // TODO: Remove this once PHPC-274 is resolved (see: PHPLIB-87)
-            $bulk->insert($index->bsonSerialize());
+            $bulk->insert($index);
         }
 
         $server->executeBulkWrite($this->dbname . '.system.indexes', $bulk);