Update README.md

Kento75 · Kento75 · commit e53929fe22ed · 2020-08-01T15:45:48.000+09:00
diff --git a/README.md b/README.md
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 # centos7-nginx-laravel-container
 
 [![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](LICENSE)
+[![Build Status](https://travis-ci.com/lagoon-io/centos7-nginx-laravel-container.svg?branch=master)](https://travis-ci.com/lagoon-io/centos7-nginx-laravel-container)
 
 ## モジュール
 
