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README.md

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 Read Me
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-[![Build Status](https://travis-ci.org/Kozea/Radicale.svg?branch=master)](https://travis-ci.org/Kozea/Radicale)
+![Test](https://github.com/Kozea/Radicale/workflows/Test/badge.svg)
 [![Coverage Status](https://coveralls.io/repos/github/Kozea/Radicale/badge.svg?branch=master)](https://coveralls.io/github/Kozea/Radicale?branch=master)
 
 Radicale is a free and open-source CalDAV and CardDAV server.