Test samples with JavaFX 11

[abhinayagarwal]

Make sure all samples work with JavaFX 11

[abhinayagarwal]

For testing the project with snapshot version of JavaFX 11, we need to enable maven by add a pom.xml to the project. We can remove the file later, once JavaFX ea versions are released and gradle support is added.

[DJViking]

I was able to run this project with Java 11 and JavaFX 11. I did not notice any problems, but did not run all samples.

I have made a commit with my changes. I can send in a merge request for it.