Cannot add a bridged Accessory with the same UUID as another bridged Accessory
I'm getting an error when trying to run homebridge:

``` bash
$ homebridge
Loaded plugin: homebridge-smartthings
Registering platform 'homebridge-smartthings.SmartThings'

---
Loaded config.json with 0 accessories and 1 platforms.

---
Loading 1 platforms...
[SmartThings] Initializing SmartThings platform...
[SmartThings] Fetching Smart Things devices.
[SmartThings] Device Added - Group lights, Name GE Link Bulb, ID 7250950c-0619-45f1-8a62-125722bd7580
[SmartThings] Device Added - Group switch, Name Garage Door, ID 740a869e-36a4-4f67-a37c-8da3a0395e36
[SmartThings] Device Added - Group sensor, Name Austin's iPhone, ID a1229814-9927-4202-9328-51b5671569e5
[SmartThings] Device Added - Group sensor, Name Back Door, ID fa46ab73-5801-4d36-9d66-5b425b2dd1db
[SmartThings] Device Added - Group sensor, Name Dining Room, ID b91dcc0b-c0e3-43e1-8b39-77a8419d1665
[SmartThings] Device Added - Group sensor, Name Front Door, ID 6c3d585c-ebaa-4950-b351-5f6c6da7a6be
[SmartThings] Device Added - Group sensor, Name Jo's Room Window, ID 32a63eb2-b275-470e-8ff4-f61abe920caa
[SmartThings] Device Added - Group sensor, Name Living Room, ID 69a2247f-aef9-4586-968c-debdd0053d93
[SmartThings] Device Added - Group sensor, Name Magan's iPhone, ID f26ef7ef-3ec6-431a-8965-c471e6f12b08
[SmartThings] Device Added - Group sensor, Name Pink Room Window, ID 564acbca-dd70-4398-9c1f-33519ce7cdf9
[SmartThings] Device Added - Group sensor, Name Side Door, ID 10dbd066-bdda-4eb3-b3ae-814c81ee6d84
[SmartThings] Device Added - Group sensor, Name Upstairs Hallway, ID 4d655996-3786-4a6a-a53b-d142a0b40ee3
[SmartThings] Device Added - Group sensor, Name Garage, ID 84ae1c3a-96f7-4949-b98b-353a30e3c075
[SmartThings] Device Added - Group sensor, Name Garage Door, ID 50e67136-65b3-40ee-bebd-25131dcb1e0e
[SmartThings] Device Added - Group switch, Name Aeon Siren, ID 1731fa1f-a133-4411-b07e-b082e2e4d812
[SmartThings] Unknown Capabilities: ["Relay Switch","Alarm"]
[SmartThings] Initializing platform accessory 'GE Link Bulb'...
[SmartThings] Initializing platform accessory 'Garage Door'...
[SmartThings] Initializing platform accessory 'Austin's iPhone'...
[SmartThings] Initializing platform accessory 'Back Door'...
[SmartThings] Initializing platform accessory 'Dining Room'...
[SmartThings] Initializing platform accessory 'Front Door'...
[SmartThings] Initializing platform accessory 'Jo's Room Window'...
[SmartThings] Initializing platform accessory 'Living Room'...
[SmartThings] Initializing platform accessory 'Magan's iPhone'...
[SmartThings] Initializing platform accessory 'Pink Room Window'...
[SmartThings] Initializing platform accessory 'Side Door'...
[SmartThings] Initializing platform accessory 'Upstairs Hallway'...
[SmartThings] Initializing platform accessory 'Garage'...
[SmartThings] Initializing platform accessory 'Garage Door'...
/Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge/node_modules/hap-nodejs/lib/Accessory.js:183
      throw new Error("Cannot add a bridged Accessory with the same UUID as another bridged Accessory: " + existing.UUID);
      ^

Error: Cannot add a bridged Accessory with the same UUID as another bridged Accessory: fbb0bc6a-7b17-479e-8910-a8b7da88f08b
    at Bridge.Accessory.addBridgedAccessory (/Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge/node_modules/hap-nodejs/lib/Accessory.js:183:13)
    at Server.<anonymous> (/Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge/lib/server.js:226:24)
    at /Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge/node_modules/hap-nodejs/lib/util/once.js:15:19
    at /Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge-smartthings/index.js:104:4
    at /Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge-smartthings/index.js:81:5
    at /Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge-smartthings/lib/smartthingsapi.js:93:13
    at IncomingMessage.<anonymous> (/Users/AustinEldridge/.nvm/versions/node/v5.6.0/lib/node_modules/homebridge-smartthings/lib/smartthingsapi.js:46:27)
    at emitNone (events.js:85:20)
    at IncomingMessage.emit (events.js:179:7)
    at endReadableNT (_stream_readable.js:906:12)
```

I can fix it by removing some of my devices but the README specifically states

> If you select the same device in multiple categories it will only be shown once in HomeKit, so you can safely check them all in all groups.

I've not had time to dig into it myself - any thoughts on what the issue is?
