message: Upgrade graphLayouts in README
  Remove breadthfirst and klay and change cose to 'cose-bilkent'
diff: @@ -196,11 +196,9 @@ toolbar: {
  ----
  toolbar: {
  graphLayouts: {
  - breadthfirst: 'Breadthfirst',
  cola: 'Cola',
  - cose: 'Cose',
  - dagre: 'Dagre',
  - klay: 'Klay'
  + 'cose-bilkent': 'Cose',
  + dagre: 'Dagre'
  }
  }
  ----
  