README.md in graphwerk-1.1.0 vs README.md in graphwerk-1.2.0

@@ -38,9 +38,10 @@
 ```ruby
 graph = Graphwerk::Builders::Graph.new(
    Packwerk::PackageSet.load_all_from("."),
    options: {
      layout: Graphwerk::Layout::Twopi,
+     deprecated_references_color: 'yellow',
      graph: { overlap: true },
      node: { fillcolor: '#000000' },
      edges: { len: '3.0' }
     }
 ).build