Link test up to DEBUG version by default

Author: fortes

test/index.html

@@ -4,7 +4,7 @@
     <title>history.js Unit Tests</title>
     <link rel="stylesheet" href="qunit/qunit/qunit.css" />
     <script src="qunit/qunit/qunit.js"></script>
-    <script src="../build/history-min.js"></script>
+    <script src="../src/history.js"></script>
     <script>
       var IE8inIE7 = document.documentMode && document.documentMode <= 7;