add MapKit framework
need this to enable user to search by address
will return MKMapItem objects, which include latitude and longitude
should be able to use those properties to convert into CLLocation objects and use with Google Maps

https://developer.apple.com/library/ios/documentation/userexperience/Conceptual/LocationAwarenessPG/UsingGeocoders/UsingGeocoders.html

https://developer.apple.com/library/ios/documentation/MapKit/Reference/MKLocalSearch/Reference/Reference.html#//apple_ref/occ/cl/MKLocalSearch