TVs don't appear as accessories in the Home app
Just installed this plugin, and got it to successfully authenticate with 2 of my Sony TVs, but for some reason they won't show up in the Home app. Checked the homebridge hub in the home app and it lists my other accessory, but none of the TVs.

This is what I've added to my config.json file:
```
  "platforms": [
   {
     "platform": "BraviaOSPlatform",
     "tvs": [
       {
         "name": "sonytvstue",
         "ip": "192.168.1.93",
         "port": 80,
         "customSpeaker": true,
         "cecInputs": true
       },
       {
         "name": "sonytvoffice",
         "ip": "192.168.1.59",
         "port": 80
       }
     ],
     "interval": 10
   }
  ]
```

And this is from my logs:

> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] Adding new accessory: sonytvstue
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvstue: Initalizing Bravia API with IP Control
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvstue: Cheking authentication...
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] Adding new accessory: sonytvstue Speaker
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvstue Speaker: Cheking authentication...
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvoffice: Initalizing Bravia API with IP Control
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvoffice: Cheking authentication...
> [6/22/2019, 11:43:24 PM] Homebridge is running on port 53793.
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvstue: sonytvstue.json refreshed with new cookie!
> [6/22/2019, 11:43:24 PM] [BraviaOSPlatform] [INFO] sonytvoffice: sonytvoffice.json refreshed with new cookie!
> [6/22/2019, 11:43:29 PM] [BraviaOSPlatform] [INFO] sonytvstue: Authenticated!
> [6/22/2019, 11:43:29 PM] [BraviaOSPlatform] [INFO] sonytvstue: CEC detected, checking TV state before fetching inputs...
> [6/22/2019, 11:43:29 PM] [BraviaOSPlatform] [INFO] sonytvoffice: Authenticated!

Any idea why these TVs won't show up as accessories?