title: AFNetworking reachability is always unknown
body: <p>I start monitoring like this in my AppDelegate:</p>
  
  <pre><code>[[AFNetworkReachabilityManager sharedManager] startMonitoring];
  </code></pre>
  
  <p>On my root controller I then need to check if reachability is available and I perform this action to decide how to draw my UI:</p>
  
  <pre><code>AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
  NSLog(@"%s - %@", __FUNCTION__, AFStringFromNetworkReachabilityStatus([manager networkReachabilityStatus]));
  switch ([manager networkReachabilityStatus]){
      case AFNetworkReachabilityStatusNotReachable:
          [self showNetworkUnreachable];
          break;
      default:
          [self hideNetworkUnreachable];
  }
  </code></pre>
  
  <p>My issue is that here status is always unknown even if the device has connection.</p>
  
  <p>Possibly AfNetworking is not the right tool to be used here. Any suggestion?</p>