Added docs to integration tests

README.adoc

@@ -113,6 +113,16 @@ rabbit and redis.
 NOTE: If all else fails, build with the command from `.travis.yml` (usually
 `./mvnw install`).
 
+==== Integration tests
+
+You can run the integration tests that boot up via docker compose the necessary
+middleware during project building. To do that you need to run maven with the
+`integration` profile.
+
+----
+$ ./mvnw install -Pintegration
+----
+
 === Documentation
 
 The spring-cloud-build module has a "docs" profile, and if you switch