Step 1
Extract HerobrineAI.jar to plugins.Step 2
Run server and let the server generate config.yml.Note:You can use /hb allworlds command in console to automatically add all worlds into config.In this case you can skip Step 3 and 4.
Step 3
Open plugins/HerobrineAI/config.yml Edit Worlds in config and change it to yours.Note: Worlds is all worlds where Herobrine can appear and do something.
This is default
Worlds: - world
Change it to
Worlds: - your_world_name - your_other_world_name
Note: World´s name cannot have blank spaces!