Add java example

doc/ci/examples/README.md

@@ -3,3 +3,7 @@
 + [Test and deploy a Ruby application to Heroku](test-and-deploy-ruby-application-to-heroku.md)
 + [Test and deploy a Python application to Heroku](test-and-deploy-python-application-to-heroku.md)
 + [Test a Clojure application](test-clojure-application.md)
+
+# Examples outside the documentation
+
++ [Test a java app](https://medium.com/@kaiwinter/javafx-and-code-coverage-on-gitlab-ci-29c690e03fd6#.7dqp79slr)