add demo video with webvtt subtitles
Merge pull request #1 from ShayanZafar/gh-pages

Basic Structure
Merge branch 'gh-pages' of github.com:jbraffoul/webvtt-presentation into gh-pages-dev

Conflicts:
	index.html
Merge pull request #2 from jbraffoul/gh-pages-dev

add demo video with webvtt subtitles
Content 90 percent finished.