Changing badges

README.md

@@ -1,6 +1,7 @@
 PHP Sorted Collections
 ======================
 [![Build Status](https://secure.travis-ci.org/chdemko/php-sorted-collections.png)](http://travis-ci.org/chdemko/php-sorted-collections)
+[![Code coverage](https://coveralls.io/repos/chdemko/php-sorted-collections/badge.png?branch=master)](https://coveralls.io/r/chdemko/php-sorted-collections?branch=master)
 [![Latest Stable Version](https://poser.pugx.org/chdemko/sorted-collections/v/stable.svg)](https://packagist.org/packages/chdemko/sorted-collections)
 [![Total Downloads](https://poser.pugx.org/chdemko/sorted-collections/downloads.svg)](https://packagist.org/packages/chdemko/sorted-collections)
 [![Latest Unstable Version](https://poser.pugx.org/chdemko/sorted-collections/v/unstable.svg)](https://packagist.org/packages/chdemko/sorted-collections)