title: Intercepting EVERY response with Alamofire
body: <p>I'm just exploring using Alamofire and it is excellent but I'd like to do something that I feel is possible just not sure how.</p>
  
  <p>Our authentication with the server uses one-time-use bearer tokens. So for every request made I have to store the new token sent down with that request.</p>
  
  <p>What I'd like to do is intercept every response that comes back and check the <code>Authorisation</code> header. Save it to disk and then forward to the place waiting for the actual data.</p>
  
  <p>Is this possible with Alamofire?</p>
  
  <p>If so, please could you point me in the right direction.</p>
  
  <p>Thanks</p>