remove unnecessary return of 'refresh'

[dkrugman]

It is not necessary to return a value for refresh in this example.

[googlebot]

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[dkrugman]

1. I signed it!
2. The build failure looks like a problem with an unrelated protractor:travis task.

Running "protractor:travis" (protractor) task
........
[safari 7 OS X 10.9 #3] Failures:
[safari 7 OS X 10.9 #3]
[safari 7 OS X 10.9 #3] 1) Customizing the jqlite / jquery version should be able to force jqlite
[safari 7 OS X 10.9 #3] at 0.376s [Thu, 05 Nov 2015 14:18:16 GMT]
[safari 7 OS X 10.9 #3] Message:
[safari 7 OS X 10.9 #3] NoSuchWindowError: The driver is not focused on a window. You must switch to a window before proceeding. (WARNING: The server did not provide any stacktrace information)

[googlebot]

CLAs look good, thanks!

[gkalpak]

Tests pass now 😃

[gkalpak]

Baclported to v1.4.x as b0c19f8.