Fix change in Preferences path for Xcode6.1 simulators

In Xcode 6.1 preferences changed again to:

```
~/Library/Developer/CoreSimulator/Devices/2471BD90-9A5E-484A-B31B-2B65CA39FBAE/data/Containers/Data/Application/580B0EC9-4552-43B5-A0A1-A188AAE589A5/Library/Preferences/[bundle id].plist
```

This check did not sufficiently work for xcode 6.0