title: cant get email with Net::Facebook::Oauth2
body: <pre><code>  my $fb = Net::Facebook::Oauth2-&gt;new(
          application_id =&gt; 'your_application_id',
          application_secret =&gt; 'your_application_secret',
          callback =&gt; 'http://yourdomain.com/facebook/callback'
      );
  
      my $access_token = $fb-&gt;get_access_token(code =&gt; $cgi-&gt;param('code'));
      ###save this token in database or session
  
      ##later on your application you can use this verifier code to comunicate
      ##with facebook on behalf of this user
  
      my $fb = Net::Facebook::Oauth2-&gt;new(
          access_token =&gt; $access_token
      );
  
      my $info = $fb-&gt;get(
          'https://graph.facebook.com/me' ##Facebook API URL
      );
  
      print $info-&gt;as_json;
  </code></pre>
  
  <p>when i try to print the json format of response i am missing the email the followin is the output what i get </p>
  
  <pre><code>{"id":"100001199655561","name":"Pavan Kumar Tummalapalli","first_name":"Pavan","middle_name":"Kumar","last_name":"Tummalapalli","link":"http:\/\/www.facebook.com\/pavan.tummalapalli","username":"pavan.tummalapalli","hometown":{"id":"125303864178019","name":"Kodada, India"},"location":{"id":"115200305158163","name":"Hyderabad, Andhra Pradesh"},"favorite_athletes":[{"id":"108661895824433","name":"AB de Villiers"}],"education":[{"school":{"id":"129163957118653","name":"City Central School"},"type":"High School"},{"school":{"id":"124833707555779","name":"Anurag Engineering College"},"year":{"id":"136328419721520","name":"2009"},"type":"College"}],"gender":"male","timezone":5.5,"locale":"en_US","verified":true,"updated_time":"2012-12-30T09:13:54+0000"}
  </code></pre>
  
  <p>'<a href="https://graph.facebook.com/me?fields=email" rel="nofollow">https://graph.facebook.com/me?fields=email</a> </p>
  
  <p>the i get the following reponse as</p>
  
  <pre><code>{"error":{"message":"An active access token must be used to query information about the current user.","type":"OAuthException","code":2500}}
  </code></pre>