Added additional information in Dutch and small picture to RoboMind Academy resource Netherlands

Added some additional information in Dutch on the Netherlands resource page including a small picture.
Hope this is according to standards and as intended by CodeEU.
Ok, thanks, I was getting a different kind of error when testing with your settings on my laptop. Can't accept the Pull request without this file, can you please push a new commit that reverts back to the original? I'd like to test these settings a bit more before merging (there has been a recent update to Jekyll that runs on GitHub Pages).