Video lightbox boxes section

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Add videos in _data/videos.yml:

- title: Jekyll Introduction
  desc: Overview of the most popular static generator
  url: https://youtu.be/T1itpPvFWHI

- title: Creating a post
  desc: Lean how to publish your first post in Jekyll
  url: https://youtu.be/gsYqPL9EFwQ

Video sources can be YouTube, Vimeo or local:

video.mp4
https://www.youtube.com/watch?v=YE7VzlLtp-4
https://vimeo.com/1084537

Then add the following to a page to display video lightbox boxes:

{% include videos.html columns="2" title="Video Tutorials" subtitle="Watch screencasts to get you started fast with Jekyll" %}