[Fixable] ERROR LOADING PLUGIN homebridge-broadlink-rm: Cannot find module 'hap-nodejs'
Hey Luke,

First off just want to say huge thank you from me and everyone who uses your amazing plugin!

 I am getting the following error casuing homebridge to crash on launch, after upgrading homebridge-broadlink-rm to v3.6.22

```
ERROR LOADING PLUGIN homebridge-broadlink-rm
Error: Cannot find module 'hap-nodejs'
Require stack:
 - /usr/lib/node_modules/homebridge-broadlink-rm/node_modules/homebridge-platform-helper/dist/accessory.js
 - /usr/lib/node_modules/homebridge-broadlink-rm/node_modules/homebridge-platform-helper/dist/index.js
 - /usr/lib/node_modules/homebridge-broadlink-rm/platform.js
 - /usr/lib/node_modules/homebridge-broadlink-rm/index.js
```
Then further down, as a result of the above:
```
Error: The requested platform 'BroadlinkRM' was not registered by any plugin
...
Got SIGTERM, shutting down Homebridge...
```

I believe a dependency 'homebridge-platform-helper' is missing a dependency of 'hap-nodejs'

As below, it can be fixed by manually installing this package.

Thanks again!

## People looking for a quick fix!
Run the following command to install `hap-nodejs` manually and allow the plugin to run.
```
npm i -g hap-nodejs
```