title: Authenticate and request a user's timeline with Twitter API 1.1 oAuth
body: <p>This morning I have received the dreaded 'The Twitter REST API v1 is no longer active. Please migrate to API v1.1.' error in a few of my web sites.</p>
  
  <p>Previously I have been using javascript/json to make these calls to <a href="http://api.twitter.com/1/statuses/user_timeline.json">http://api.twitter.com/1/statuses/user_timeline.json</a>? to display a timeline.</p>
  
  <p>As this is no longer available I need to adopt the new 1.1 API process.</p>
  
  <p>I need to do the following using HttpWebRequest objects not a 3rd party application:</p>
  
  <ol>
  <li>Authenticate using oauth key and secret</li>
  <li>Make an authenticated call to pull back to display users timeline</li>
  </ol>