title: How to get lat and long coordinates from address string
body: <p>I have a <code>MKMapView</code> that has a <code>UISearchBar</code> on the top, and I want the user to be able to type a address, and to find that address and drop a pin on it. What I don't know is how to turn the address string into longitude and latitude, so I can make a <code>CLLocation</code> object. Does anyone know how I can do this?</p>