title: Add -unittest argument to compiler with VisualD
body: <p>I'm starting out with D using VisualD and my unit test seem to be ignored.</p>
  
  <p>When I go to project properties -> configuration properties -> General, I can check "Use other compiler" and manual add -unittest to the compiler path. This does not work. So how do you compile with the argument -unittest ?</p>
  
  <p>Am I missing something obvious here?</p>