title: Error using Objective C typedef enum in Swift 3
body: <p>I try to use <code>Reachability</code> class provided by Apple.</p>
  
  <p>It has an Objective-C enum like this:</p>
  
  <pre><code>typedef enum : NSInteger {
      NotReachable = 0,
      ReachableViaWiFi,
      ReachableViaWWAN
  } NetworkStatus;
  </code></pre>
  
  <p>And in Swift I'm doing something like this:</p>
  
  <pre><code>if let networkReachability = notification.object as? Reachability {
      let remoteHostStatus = networkReachability.currentReachabilityStatus()
      let center = NotificationCenter.default
      var notificationKey: String
  
      if (remoteHostStatus == NetworkStatus.NotReachable) {
          ...
      }
  }
  </code></pre>
  
  <p>But I get the error:</p>
  
  <blockquote>
    <p>Type 'NetworkStatus' has no member 'NotReachable'</p>
  </blockquote>
  
  <p>What am I doing wrong? How can I use that Objective-C <code>enum</code> in Swift?</p>