Rename j$ to jasmineUnderTest for specs

- Clarifies what it is for when writing tests
- No longer named the same as the `jasmine` that is injected into live
  code

spec/html/HtmlSpecFilterSpec.js

@@ -1,14 +1,14 @@
-describe("j$.HtmlSpecFilter", function() {
+describe("jasmineUnderTest.HtmlSpecFilter", function() {
 
   it("should match when no string is provided", function() {
-    var specFilter = new j$.HtmlSpecFilter();
+    var specFilter = new jasmineUnderTest.HtmlSpecFilter();
 
     expect(specFilter.matches("foo")).toBe(true);
     expect(specFilter.matches("*bar")).toBe(true);
   });
 
   it("should only match the provided string", function() {
-    var specFilter = new j$.HtmlSpecFilter({
+    var specFilter = new jasmineUnderTest.HtmlSpecFilter({
       filterString: function() { return "foo"; }
     });