[io] add edges in the rendering with the option --with-edges
[io] add edges in the rendering with the option --with-edges

radarsat1/siconos,siconos/siconos,siconos/siconos,radarsat1/siconos,radarsat1/siconos,radarsat1/siconos,radarsat1/siconos,siconos/siconos,siconos/siconos