Polymer/docs — pull request #661 by robdodson (2014-09-29 19:39:12+00:00)
Title: https for video playlist

[Looks like our video page has stopped working because it's trying to load content over http](https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/polymer-dev/OkRKdorBUYw/t2nSKAhDP14J). I think this should fix the issue. @ebidel would it be possible to push this up?