Error 
I'm getting an error when starting up home bridge with this module (see below).  I'm configuring two Harmony Hubs as follows:

```
"platforms": [
    {
        "platform": "HarmonyHub",
        "name": "LivingRoom",
        "hubIP": "192.168.1.10"
    },
    {
        "platform": "HarmonyHub",
        "name": "Kitchen",
        "hubIP": "192.168.1.11"
    },
```


```
/usr/lib/node_modules/homebridge/lib/api.js:122
throw new Error("The requested platform '" + name + "' was not registered by any plugin.");
^
Error: The requested platform 'HarmonyHub' was not registered by any plugin.
at API.platform (/usr/lib/node_modules/homebridge/lib/api.js:122:13)
at Server._loadPlatforms (/usr/lib/node_modules/homebridge/lib/server.js:314:45)
at Server.run (/usr/lib/node_modules/homebridge/lib/server.js:85:36)
at module.exports (/usr/lib/node_modules/homebridge/lib/cli.js:40:10)
at Object.<anonymous> (/usr/lib/node_modules/homebridge/bin/homebridge:17:22)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Function.Module.runMain (module.js:693:10)
at startup (bootstrap_node.js:191:16)
at bootstrap_node.js:612:3
homebridge.service: main process exited, code=exited, status=1/FAILURE
Unit homebridge.service entered failed state.
```