title: How to pass an Authorization token for AFNetworking 2.0 as it is deprecated
body: <p>I'm Currently working on a project where I'm using AFNetworking 2.0 library to GET and POST the data to and from server.In some cases i wanted to pass a token value as header type for the request with AFHTTPRequestOperationManager. So far this is what i found </p>
  
  <pre><code>[manager.requestSerializer setAuthorizationHeaderFieldWithToken:TOKEN_VALUE];
  </code></pre>
  
  <p>but it is deprecated in version 2.0, and i also learned in version AFNetWorking 2.2.1 it is not deprecated. But i couldn't find the library with version 2.2.1 to download it.
  Please help me out if there is any other way that i can set token as my header for AFHTTPRequestOperationManager. And also any link to download the AFNetworking latest version library.</p>