Update README.md

Author: Bernhard Grünewaldt

README.md

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 # java-junit-xml-merger
 
-![](https://codeclou.github.io/doc/badges/generated/test-coverage-100.svg?v2)
+[![](https://codeclou.github.io/doc/badges/generated/test-coverage-100.svg?v2)](https://codeclou.github.io/java-junit-xml-merger/test-coverage/1.0.0/)
 
 Merges multiple JUnit XML files into a single testsuites XML file.
 
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+<p align="center"><img src"=width="80%" src="https://codeclou.github.io/java-junit-xml-merger/img/demo.gif" /></p>
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