Better style for directory names in coverage menu.

Dirnames are offset in a darker color to make the
filename stand out.

lib/vows/coverage/report-html.js

@@ -1,4 +1,5 @@
 var util = require('util'),
+    path = require('path'),
     fs   = require('fs'),
     file = require('./file');
 
@@ -51,12 +52,21 @@ this.report = function (coverageMap) {
 
     fs.writeSync(out, '<li><a href="#overview">overview</a></li>');
     files.forEach(function (data) {
-        var coverageClass = getCoverageClass(data);
+        var file = data.filename,
+            dirname = path.dirname(file),
+            basename = file.substr(dirname.length + 1),
+            coverageClass = getCoverageClass(data);
+
+        if (dirname === ".") {
+            dirname = "";
+            basename = file;
+        }
+
         fs.writeSync(out, '<li><span class="cov ' + coverageClass + '">' +
             data.coverage.toFixed(0) + '</span>' +
-            '<a href="#' + data.filename + '"><span class="dirname">/</span>' +
-            '<span class="basename">' + data.filename +
-            '</a></li>');
+            '<a href="#' + file + '"><span class="dirname">' + dirname +
+            '/</span><span class="basename">' + basename +
+            '</span></a></li>');
     });
 
     fs.writeSync(out, '</div>');