title: Displaying google direction api response on Map
body: <p>I am using google api V3 in my iOS App,
  I requested to google api direction service, by http GET method, I got a very large json response, I got many alternate routes from origin to destination, now I want to show the route of each alternative on map, how should I done this ? is there any need to integrate google sdk in iOS, or can i use webView only, please help me, and suggest the simplest way.
  Thanks in advance</p>