For this Version I added Functionality for Offline Servers. You can no easily set the Config Parameter offlineServer to true to enable this Feature. Additionally I updated the Feedback Messages and optimized the perfomance in some points.

Attention: By enabeling Offline Servers the Plugin will not work on Online Servers until you disable it again.

If you have used another version of the Plugin before, you just have to delete the config.yml file, start the Server and reconfigure the Config.

Attention: You open yourself an security risk with offline servers. To solve this use third party solutions like AuthMeReloaded (https://www.spigotmc.org/resources/authmereloaded.6269/).

Issues?
If you find any Bugs or Mistakes feel free to open an Issue or a Pull Request. https://github.com/Jakkoble/TwitchWhitelist