RxSwift iBeacon

 override func viewDidLoad() {
        super.viewDidLoad()
        self.setUpLocationmanager()

        let beaconSequence =  locationManager.rx_didRangeBeaconsInRegion.map{$0.beacons}
        
        let sortedBeaconSequence = beaconSequence.map{beacons in self.sortBeaconsByRSSI(beacons)}
        let nearestBeaconSequence = sortedBeaconSequence.map({$0[0]})
            .filter{$0.proximity == CLProximity.Immediate}
            .distinctUntilChanged{$0.minor == $1.minor}
        
        nearestBeaconSequence.subscribeNext{beacon in
            print("\(beacon)")
            self.configureView(beacon.minor.intValue)
            }
            .addDisposableTo(disposeBag)
    }
}