[ADDED] Support for Spigot 1.13.x
[ADDED] Example configuration file

[REMOVED] Support for versions bellow 1.13

IMPORTANT
If you are using a Spigot version bellow 1.13 this version of PermissionShop will not work for you. If for some reason you decide not to update your server to the newest Spigot version, which I recommand you do, you will have to stick with PermissionShop version 2.3.2 BETA since I will no longer support older Spigot versions.