ios10: CBCentralManagerState and CBPeripheralManagerState merged to CBManagerState

[Daij-Djan]

Hi

on ios10 apple merged CBCentralManagerState and CBPeripheralManagerState into CBManagerState they basically renamed the enum... I added a workaround... I use the rawValue and then create the enum again

e.g. let newCause = BKUnavailabilityCause(centralManagerState: CBCentralManagerState(rawValue: central.state.rawValue)!)