title: how to send a request to google direction api to get a path in swift
body: <p>I'm new to swift and 
  I'm creating an App that will show the location of the user and put a marker to that position. After the user moves. The marker would be removed and a new marker would be created. Now. I want to make markers on Point A and Point B into the app and show the route on the map. It shall use the nearest road on the map.
  i already study the google map document but i need help i can't understand how to make a route between 2 points? </p>
  
  <p>I would be happy if you help me, thank-you very much.</p>