I just came across this description of how to control a nest via homebridge:
http://www.idownloadblog.com/2015/12/18/control-nest-with-apple-watch-homekit-siri-homebridge/
Is it possible to control multiple devices via the same homebridge? I assume this means having multiple entries in a config.json file? Or does each config.json file require a separate homebridge (instance or server)?