title: multi column grouping and totaling in rails
body: <p>my data looks like this</p>
  
  <pre><code> ___________________________________
  |name  date      status    location |
  |Tom   1/1/2010  Ready     Home     |
  |Tom   1/1/2010  Ready     Home     |
  |Bill  1/18/2010 Go        Work     |
  |Bob   2/19/2010 Ready     Field    |
  |Bob   2/19/2010 Ready     Field    |
  |Wil   4/5/2010  Steady    Work     |
  |Wil   4/5/2010  Steady    Work     |
  |Wil   4/5/2010  Steady    Work     |
  |Wil   4/5/2010  Steady    Home     |
  |Bill  7/14/2010 Stop      Home     |
  |___________________________________| 
  </code></pre>
  
  <p>i need to group/count it so that looks like this</p>
  
  <pre><code>Name   Date      Location    Status   Count
  Tom    1/1/2010  Home        Ready    2
  Bill   1/18/2010 Work        Go       1
  Bill   7/14/2010 Home        Stop     1
  Bob    2/19/2010 Field       Ready    2
  etc.....
  </code></pre>