Add Scilab/Xcos to tools (#27)

Author: vincentcouvert

content/tools.html

@@ -136,5 +136,13 @@ <h2>Tools that support SSP</h2>
       <td>1.0</td>
       <td>no</td>
     </tr>
+    <tr>
+      <td><a href="https://www.scilab.org">Scilab/Xcos</a></td>
+      <td><a href="https://www.3ds.com">Dassault Systèmes S.E.</a></td>
+      <td>Provided with Scilab, Xcos is a graphical editor to design hybrid dynamical systems models (with SSP and FMU support).</td>
+      <td>free</td>
+      <td>2.0</td>
+      <td>2.0</td>
+    </tr>
   </tbody>
 </table>