title: Setting file directory in appSettings of an app.config file
body: <p>Currently I'm hard coding this file location like so </p>
  
  <pre><code>   var appleCert = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "../../../Resources/PushSharp.Apns.Sandbox.p12"));
  </code></pre>
  
  <p>What I'd like to do is the somehow change that line to <code>var appleCert = somevariablehere;</code>
  And I'd like it so that in my AppSettings section of the app.config file contacts the location or is able to find it. Is this possible? If so would anyone care to help me on how to implement this in appSettings?</p>