Added the capability to change the default position of the zoom control and street view control.
Control names are those from the google-maps API.
Example : Add them to the map component and pass them an object as follow :

<Map
google={this.props.google}
zoom={5}
style={{ height: '80%' }}
initialCenter={{lat: 47.4840791,lng: 5.683411}}
zoomControl={true}
streetViewControl={true}
streetViewControlOptions={{position: google.maps.ControlPosition.LEFT_TOP}}
zoomControlOptions= {{position :google.maps.ControlPosition.LEFT_TOP}}