Update index.html

Author: jaxankey

games/roll/index.html

@@ -117,6 +117,12 @@
           <button onclick="collect_boards();">Boards</button>
         </td>
       </tr>
+      <tr>
+        <td class="tight">
+          <button id="shuffle" onclick="shuffle_selected_pieces(0);">(Z)huffle Selected</button>
+          <button id="roll"    onclick="scramble_selected_pieces();">(R)oll Selected</button>
+        </td>
+      </tr>
     </table>
   </div>