IBeacons

IBeacons work.

```javascript
  WS.sensorOn('ibeacon', 1000);
    
    WS.subscribe('ibeacon:2f234454-cf6d-4a0f-adf2-f4911ba9ffa6', function(chan, uuid, distance, major, minor) {
        if(major == "33" && minor == "2")
            WS.say(distance);
    });
```