title: Karma: System notifications when tests pass or fail
body: <p>Currently, when using karma/testacular, I open up a command line windows and do <code>karma start</code>.  I then generally work in vim, and if I'm working in fullscreen mode I have to tab back to the command window to see the test results when I make changes and save.</p>
  
  <p>I'd like instead to get a system notification showing me if the results of the tests were SUCCESS or FAILURE, each time I save.  </p>
  
  <p>Since I work on both linux and windows, I'd like solutions for both cases.  A vim plugin instead of a system notification would also be a fine solution, though I haven't been able to find any yet.</p>