This project is a simple Spigot/Bukkit plugin. It does not use maven by design.
Its purpose is to teach the basics of Minecraft plugin creation.
A video tutorial series showing the creation of this plugin can be found here:
https://www.youtube.com/watch?v=MBakma5Hoe8&list=PLl5ueu4uBrxu0c9e8tbocM2LDdCdR1-ke