Adding note about attending workshops separately from main conf

Author: escowles

general-info/attend.html

@@ -220,9 +220,10 @@ <h2>Format</h2>
                     presented by attendees. Proposed posters are selected by the Program
                     Committee.</li>
                     <li><em>Workshops</em>: 3- or 6-hour workshops, typically held the
-                    first or last day of the conference, as an optional add-on with a
-                    nominal extra registration fee. There are typically 6-10 workshops
-                    held each year.</li>
+                    first or last day of the conference. There are typically 6-10
+                    workshops held each year. Workshops are an optional add-on to the
+                    main conference, or can be attended separately (space-permitting).
+                    </li>
                 </ul>
             </div>
         </div>