See https://github.com/kamaradclimber/heishamon-homeassistant/
- Create or copy file heishamon.yaml in directory /config/packages ( if directory not exist , create it)
- Open file configuration.yaml in directory /config ,and check for lines:
homeassistant:
packages: !include_dir_named packages
If not exists ,add them.
- Go to Configuration / Server Control ,and first check configuration , if it is ok Restart HA.