title: Unable to login with received access token from oauth header
body: <p>Using the following header as specified in the facebook developers site, an access token is received</p>
  
  <p>Step 1: 
  <code>https://www.facebook.com/dialog/oauth?client_id=...
  &amp;scope=publish_stream
  &amp;redirect_uri=https://apps.facebook.com/example/</code></p>
  
  <p>Step2:
  <a href="https://graph.facebook.com/oauth/access_token" rel="nofollow">https://graph.facebook.com/oauth/access_token</a>? client_id=.....&amp;redirect_uri=https://apps.facebook.com/example/&amp;client_secret=....
  &amp;scope=publish_stream
  &amp;code=AQALNcjIpXfqYiegdhqlpJYRa1XXwIhPdxnyehE-bf3PjNUYk2dKQlVDG3vy4xgmR4gwbe7t7qoOwfR2gpAk4vY4PeBga6w2BvM_rTDHzUfQ73koPMMlrXdGqeSPyNds9Wy3ccWufrMzjQpmo52xYPD4QZuvNnvObIY3ICxu5XxOG4HgV-OFR_JLsTD8ThXoFH5LpJlM76ynthcOz2TovbTq#<em>=</em></p>
  
  <p>After step 2 an access token is received .</p>
  
  <p>Can this access token be used in oauth signature header? when used inoauth signature header its returning " use a valid access token"</p>