title: OWIN send static file for multiple routes
body: <p>I'm making a SPA which sits on top of ASP.Net WebAPI. I'm waiting to use HTML5 history rather than <code>#/</code> for history routing but that poses a problem for deep linking, I need to make sure <code>/</code> and <code>/foo/bar</code> all return the same HTML file (and my JS will render the right part of the SPA).</p>
  
  <p>How do I get OWIN/Katana to return the same HTML file for multiple different urls?</p>