Events: Completed the list of copied properties

Closes gh-802

Author: andyli

categories.xml

@@ -143,7 +143,7 @@ jQuery( "body" ).trigger( e );
             </li>
           </ul>
           <p>The following properties are also copied to the event object, though some of their values may be undefined depending on the event:</p>
-          <p>altKey, bubbles, button, cancelable, charCode, clientX, clientY, ctrlKey, currentTarget, data, detail, eventPhase, metaKey, offsetX, offsetY, originalTarget, pageX, pageY, relatedTarget, screenX, screenY, shiftKey, target, view, which</p>
+          <p>altKey, bubbles, button, buttons, cancelable, char, charCode, clientX, clientY, ctrlKey, currentTarget, data, detail, eventPhase, key, keyCode, metaKey, offsetX, offsetY, originalTarget, pageX, pageY, relatedTarget, screenX, screenY, shiftKey, target, toElement, view, which</p>
           <h4>OtherProperties</h4>
           <p>Certain events may have properties specific to them. Those can be accessed as properties of the <code>event.originalEvent</code> object.</p>
           <p>Example:</p>