title: multiple orderby in this linq code
body: <p>How do I add a second item to order by with this?
  I want to order by a goalsScored element too.  </p>
  
  <pre><code>var theteams = 
      (from teams in xdoc.Descendants("team")
       orderby (int)teams.Element("points") descending                               
       select 
           new Team(teams.Element("teamID").Value, 
                    (int)teams.Element("points"))                                
        ).Take(3);
  </code></pre>
  
  <p>but thenby doesn't seem to slot in to this query.</p>