update the web page and point to the paper on GraphMaps
update the web page and point to the paper on GraphMaps

Signed-off-by: Lev Nachmanson <547e21cf4741e0be725f19d6dc4faaf8564c91d1@microsoft.com>

DebajyotiMondal/automatic-graph-layout,DebajyotiMondal/automatic-graph-layout,jquirozo/graph,jquirozo/graph,FilipRychnavsky/automatic-graph-layout,jquirozo/graph,DebajyotiMondal/automatic-graph-layout,DebajyotiMondal/automatic-graph-layout,FilipRychnavsky/automatic-graph-layout,jquirozo/graph,FilipRychnavsky/automatic-graph-layout,FilipRychnavsky/automatic-graph-layout