title: Returning an NSString from an NSError
body: <p>I am using the <code>NSURLRequest</code> class in my iPhone app, and the method that calls it returns an <code>NSString</code> which is great for when the connection goes through ok, but the issue is I need to convert the NSError into an NSString so I can either return it back or run some <code>if()</code> statements on it.</p>
  
  <p>Any ideas? :)</p>