diff --git a/Query.php b/Query.php
index f974b3d..c7943d7 100644
--- a/Query.php
+++ b/Query.php
@@ -551,11 +551,7 @@ class Query extends Component implements QueryInterface
 
         $names = '';
         foreach ($columns as $name => $column) {
-            if (is_int($name)) {
-                $names .= $column . ', ';
-            } else {
-                $names .= "\"$name\": $this->from.$column, ";
-            }
+            $names .= "\"$name\": $this->from.$column, ";
         }
 
         return 'RETURN {' . trim($names, ', ') . '}';
diff --git a/README.md b/README.md
index fa8f623..748778a 100644
--- a/README.md
+++ b/README.md
@@ -38,8 +38,10 @@ return [
         'arangodb' => [
             'class' => '\devgroup\arangodb\Connection',
             'connectionOptions' => [
-                ArangoConnectionOptions::OPTION_DATABASE => "mydatabase",
-                ArangoConnectionOptions::OPTION_ENDPOINT => 'tcp://127.0.0.1:8529',
+                triagens\ArangoDb\ConnectionOptions::OPTION_DATABASE => "mydatabase",
+                triagens\ArangoDb\ConnectionOptions::OPTION_ENDPOINT => 'tcp://127.0.0.1:8529',
+                //triagens\ArangoDb\ConnectionOptions::OPTION_AUTH_USER   => '',
+                //triagens\ArangoDb\ConnectionOptions::OPTION_AUTH_PASSWD => '',
             ],
         ],
     ],
@@ -177,3 +179,7 @@ return [
     ...
 ];
 ```
+
+
+[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/DevGroup-ru/yii2-arangodb/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
+