title: How to "convert" a Dictionary into a sequence in F#?
body: <p>How do I "convert" a Dictionary into a sequence so that I can sort by key value?</p>
  
  <pre>
  let results = new Dictionary()
  
  results.Add("George", 10)
  results.Add("Peter", 5)
  results.Add("Jimmy", 9)
  results.Add("John", 2)
  
  let ranking = 
    results
    ???????
    |> Seq.Sort ??????
    |> Seq.iter (fun x -> (... some function ...))
  </pre>