Refactoring 'registerState()' into 'stateBuilder'.

 - Adding tests
 - Adding comments

Author: nateabele

test/stateSpec.js

@@ -383,4 +383,25 @@ describe('state', function () {
     }));
   });
 
-});
+  describe('html5Mode compatibility', function() {
+
+    it('should generate non-hashbang URLs in HTML5 mode', inject(function ($state) {
+      expect($state.href("about.person", { person: "bob" })).toEqual("#/about/bob");
+      locationProvider.html5Mode(true);
+      expect($state.href("about.person", { person: "bob" })).toEqual("/about/bob");
+    }));
+  });
+
+  describe('default properties', function () {
+    it('should always have a name', inject(function ($state, $q) {
+      $state.transitionTo(A);
+      $q.flush();
+      expect($state.$current.name).toBe('A');
+      expect($state.$current.toString()).toBe('A');
+    }));
+
+    it('should always have a resolve object', inject(function ($state) {
+      expect($state.$current.resolve).toEqual({});
+    }));
+  });
+});