README.md in solve-0.6.1 vs README.md in solve-0.7.0

@@ -29,9 +29,14 @@
 
 And now solve the graph with some demands
 
     Solve.it!(graph, ['nginx', '>= 0.100.0'])
 
+Or, if you want a topologically sorted solution
+NOTE: This will raise Solve::Errors::UnsortableSolutionError if the solution contains a cycle (which can happen with ruby packages)
+
+    Solve.it!(graph, ['nginx', '>= 0.100.0'], sorted: true)
+
 ### Removing an artifact, or dependency from the graph
 
     graph.artifacts("nginx", "1.0.0").delete
 
     artifact.dependencies("nginx", "~> 1.0.0").delete