Fixes #43

[ebidel]

R: @jeffposnick @wibblymat

[addyosmani]

lgtm (however I can't recall why childNodes was used instead of children). Deferring to Jeff and Mat

[wibblymat]

I believe that I wrote that line when translating from 0.5 to 0.8. No special reason for one over the other - I didn't realise that there was an alternative, or really what childNodes actually did.

[jeffposnick]

I think I wrote that bit, but I basically have the same explanation as @wibblymat—it may have been because I saw Polymer.dom(parent).childNodes listed in the docs and assumed that was the right thing to use.

👍 if this fixes the issue you were seeing.

I'll cut a new release after addressing the docs issues in #45