Request: Please add support for iOS 8 changes

[kautaleksei]

Hi guys.
Thank you for nice sdk.
In iOS 8 released new authorizations methods without it your location manager not working:

Requesting Authorization for Location Services
requestWhenInUseAuthorization
requestAlwaysAuthorization

https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLLocationManager_Class/index.html#//apple_ref/occ/instm/CLLocationManager/requestWhenInUseAuthorization

Can you please add support for it.
Thank you.