Add CircleCI status badge to README.md

mannodermaus · mannodermaus · commit 529acfc767ff · 2021-12-18T12:00:07.000+01:00
Signed-off-by: Marcel Schnelle &lt;marcelschnelle@aol.com&gt;
diff --git a/README.md b/README.md
@@ -1,6 +1,7 @@
 [![License](https://x.h7e.eu/badges/xz/txt/license/apache)](https://www.apache.org/licenses/LICENSE-2.0.html)
 [![Stack Overflow](https://x.h7e.eu/badges/xz/txt/stackoverflow/cache2k)](https://stackoverflow.com/questions/tagged/cache2k)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.cache2k/cache2k-core/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.cache2k/cache2k-core)
+[![CircleCI](https://circleci.com/gh/cache2k/cache2k/tree/master.svg?style=svg)](https://circleci.com/gh/cache2k/cache2k/tree/master)
 
 # cache2k Java Caching
 
