title: Alamofire and SwiftyJSON Error
body: <p>I have installed Alamofire and SwiftyJSON with Cocoapods.  Independently, each are working great.  However when I try and mix the two I get an error.</p>
  
  <p>Before using Alamofire I used NSURLConnection to download data.  When the connectionHandler finished I created a JSON object with SwiftyJSON.</p>
  
  <pre><code>        let json = JSON(data: self.downloadedData!)
  </code></pre>
  
  <p>This worked without any issues.  </p>
  
  <p>To make things cleaner I wanted to use Alamofire.  When I use Alamofire I try to create a JSON object with SwiftyJSON.</p>
  
  <pre><code>Alamofire.request(.GET, "http://162.208.56.92/json_service.php").responseJSON()
              {
                  (_, _, JSON, _) in
  
                  let json = JSON(data: JSON)
          }
  </code></pre>
  
  <p>When I do this I get the following error.  </p>
  
  <blockquote>
    <p>Cannot invoke 'JSON' with an argument list of type '(data:
    AnyObject?)'</p>
  </blockquote>
  
  <p>Since JSON takes an NSData argument I tried the following.  </p>
  
  <pre><code>Alamofire.request(.GET, "http://162.208.56.92/json_service.php").responseJSON()
              {
                  (_, _, JSON, _) in
  
                  let json = JSON(data: JSON as! NSData)
          }
  </code></pre>
  
  <p>This gave me the following error.</p>
  
  <blockquote>
    <p>Cannot invoke 'JSON' with an argument list of type '(data: NSData)'</p>
  </blockquote>
  
  <p>I am stumped.  Any thoughts?</p>