title: Open iOS app from browser
body: <p>What I want to do is,
  We have having one product info on Website.
  That product is available on store.
  what we have on website is that, Product info and one button for that product.</p>
  
  <p>I want to take two actions on that button.
  When User opens website on iPad or iPhone on Safari (browser) and click on GetProduct button, then following two actions must be taken place.
  1. If user is already having product installed on device then directly open the app in device.
  2. If user is not having the app on device then link user to the app on store, so he can download from there.</p>
  
  <p>I already handled second condition,
  but how to handle the first condition.
  If I am already having the app then how to open it on action of button click in browser.</p>