Permit HTMLReporter to render every 250ms

- This is necessary for the user to see spec results fill-in
  progressively.
- There is a slight performance loss. 250 - 500ms seems to deliver the
  same amount of loss. This is still at parity with Jasmine 1.x

spec/html/HTMLReporterSpec.js

@@ -8,9 +8,10 @@ describe("HtmlReporter", function() {
     env = new jasmine.Env();
     env.updateInterval = 0;
 
+
     body = document.createElement("body");
     fakeDocument = { body: body, location: { search: "" } };
-    htmlReporter = new jasmine.HtmlReporter(fakeDocument);
+    htmlReporter = new jasmine.HtmlReporter(fakeDocument, null, function(fn) { fn() });
   });
 
   function fakeSpec(name) {