enable pipes e2e testing

For `e2e-spec.js`: If the async test is executed too early it will fail
(simply because the async message hasn’t been received yet).

Author: chalin

public/docs/_examples/pipes/dart/example-config.json

@@ -9,10 +9,6 @@ describe('Pipes', function () {
     expect(element(by.css('hero-birthday p')).getText()).toEqual("The hero's birthday is Apr 15, 1988");
   });
 
-  it('should show an async hero message', function () {
-    expect(element.all(by.tagName('hero-message')).get(0).getText()).toContain('hero');
-  });
-
   it('should show 4 heroes', function () {
     expect(element.all(by.css('hero-list div')).count()).toEqual(4);
   });
@@ -114,4 +110,8 @@ describe('Pipes', function () {
     })
   });
 
+  it('should show an async hero message', function () {
+    expect(element.all(by.tagName('hero-message')).get(0).getText()).toContain('hero');
+  });
+
 });