title: ZXing.Net.Mobile not working in Xamarin iOS
body: <p>I installed ZXing.Net.Mobile in my Xamarin.Forms project. I have no issue with Android project as I am using
   <code>MobileBarcodeScanner.Initialize (Application);</code> 
  in MainActivity. But in my iOS project I am trying to use   <code>global::ZXing.Net.Mobile.Forms.iOS.Platform.Init();</code> which is not accessiblein AppDelegate.cs file. I import following packages :</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using ZXing.Mobile;
  using Foundation;
  using UIKit;
  </code></pre>