Tests coverage.

Author: overtrue

README.md

@@ -4,6 +4,7 @@ Pinyin
 [![Build Status](https://travis-ci.org/overtrue/pinyin.svg?branch=master)](https://travis-ci.org/overtrue/pinyin)
 [![Latest Stable Version](https://poser.pugx.org/overtrue/pinyin/v/stable.svg)](https://packagist.org/packages/overtrue/pinyin) [![Total Downloads](https://poser.pugx.org/overtrue/pinyin/downloads.svg)](https://packagist.org/packages/overtrue/pinyin) [![Latest Unstable Version](https://poser.pugx.org/overtrue/pinyin/v/unstable.svg)](https://packagist.org/packages/overtrue/pinyin) [![License](https://poser.pugx.org/overtrue/pinyin/license.svg)](https://packagist.org/packages/overtrue/pinyin)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/overtrue/pinyin/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/overtrue/pinyin/?branch=master)
+[![Code Coverage](https://scrutinizer-ci.com/g/overtrue/pinyin/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/overtrue/pinyin/?branch=master)
 
 基于 [CC-CEDICT](http://cc-cedict.org/wiki/) 词典的中文转拼音工具，更准确的汉字转拼音解决方案。