title: PCL Save Image File to local File System
body: <p>I am looking for a way to store image files in my local filesystem using the <strong>PCL Storage</strong> plugin in my core Project for <code>Windows Phone</code>, <code>Xamarin.Android</code> and <code>Xamarin.iOS</code>. 
  However, the plugin does just provide methods for writing Text. Nothing about bytes.
  Is there a way to save byte arrays?</p>