Working to get the tests to pass.

The nools parser test for defines uses a deep equal to a known
structure.  There is a new property in the define parse output, extend:
<typename> , this is null unless there is an actual base class.  Adding
null, trivial change for this.

test/noolsParser.test.js

@@ -15,7 +15,7 @@ it.describe("nools dsl parser", function (it) {
                     {
                         name: "Test",
 						extend: null,
-                        properties: "({myProp : 'value'})"
+                        properties: "({myProp : 'value'})" 
                     }
                 ],
                 "rules": [],
@@ -29,6 +29,7 @@ it.describe("nools dsl parser", function (it) {
                 define: [
                     {
                         name: "Test",
+						extend: null,
                         properties: "({myFunc : function(){}})"
                     }
                 ],