Update README.md

Author: rcalago

scala-sbt/README.md

@@ -3,3 +3,4 @@
 - [Introduction to SBT](https://www.baeldung.com/scala/sbt-intro)
 - [Setting up Global Configurations in SBT](https://www.baeldung.com/scala/sbt-global-configurations)
 - [Safer Scala Code by Using WartRemover](https://www.baeldung.com/scala/wartremover)
+- [Integration Testing with SBT](https://www.baeldung.com/scala/sbt-integration-testing)