Update README.md

lor6 · web-flow · commit b9d8a8ab0a8c · 2019-03-09T23:56:46.000+02:00
diff --git a/core-groovy/README.md b/core-groovy/README.md
@@ -8,3 +8,4 @@
 - [Types of Strings in Groovy](https://www.baeldung.com/groovy-strings)
 - [A Quick Guide to Iterating a Map in Groovy](https://www.baeldung.com/groovy-map-iterating)
 - [An Introduction to Traits in Groovy](https://www.baeldung.com/groovy-traits)
+- [Lists in Groovy](https://www.baeldung.com/groovy-lists)
