Congrats on the first release! I'll try to have a look tonight or tomorrow.
Do we need any setup instructions? Or are the roborunner.properties and empty Robocode installs already in the zip?
I am working on automating the runner creation and robot jar copying process today. As well as adding an options dialog to configure the paths and jvm arguments.
The GUI won't use the properties as the standard roborunner. But the current version doesn't use any at all.
But for the current version, you need to create the robocodes/r[0-9]+ directories yourself (or use the script you wrote). You can pick the thread count in the program itself (but only up to the number of runners you created). Make sure to copy the robots into robocodes/r[0-9]+/robots directories as well.