Update README.md

Author: Igor Chepurnoy

README.md

@@ -4,6 +4,8 @@ ArrayQuery Component for Yii2
 Allows searching/filtering of an array. This component is very useful when displaying array data in GridViews with an
 ArrayDataProvider.
 
+[![Build Status](https://travis-ci.org/yii2mod/yii2-array-query.svg?branch=master)](https://travis-ci.org/yii2mod/yii2-array-query)
+
 Installation
 ------------
 
@@ -47,4 +49,4 @@ $query->from($data);
 $query->where(['username' => 'admin']);
 
 $rows = $query->all();
-```
+```