Update examples for 2.0

lib/jasmine-core/example/spec/SpecHelper.js

@@ -1,9 +1,15 @@
-beforeEach(function() {
-  addMatchers({
-    toBePlaying: function(expectedSong) {
-      var player = this.actual;
-      return player.currentlyPlayingSong === expectedSong && 
-             player.isPlaying;
-    }
-  });
+beforeEach(function () {
+    jasmine.Expectation.addMatchers({
+        toBePlaying: function () {
+            return {
+                compare: function (actual, expected) {
+                    var player = actual;
+
+                    return {
+                        pass: player.currentlyPlayingSong === expected && player.isPlaying
+                    }
+                }
+            };
+        }
+    });
 });