Add request for passport picture for letter of invitation

Author: helioloureiro

index.html

@@ -557,7 +557,8 @@ <h2>Letter of invitation</h2>
                     <p>
                         Fill the empty fields, save as pdf and send it to
                         <a href="mailto:info@pycon.se?subject=Letter%20of%20invitation">info@pycon.se</a>
-                        with subject "Letter of invitation".
+                        with subject "Letter of invitation". Please also include a picture of your 
+                        passport for confirmation.
                     </p>
                 </div> <!-- end of col -->
             </div> <!-- end of row -->