added presentation

pres/reveal.js-master/.gitignore

pres/reveal.js-master/.travis.yml

pres/reveal.js-master/CONTRIBUTING.md

pres/reveal.js-master/Gruntfile.js

pres/reveal.js-master/LICENSE

pres/reveal.js-master/README.md

pres/reveal.js-master/bower.json

pres/reveal.js-master/css/print/paper.css

pres/reveal.js-master/css/print/pdf.css

pres/reveal.js-master/css/reveal.css

pres/reveal.js-master/css/reveal.scss

pres/reveal.js-master/css/theme/README.md

pres/reveal.js-master/css/theme/beige.css

pres/reveal.js-master/css/theme/black.css

pres/reveal.js-master/css/theme/blood.css

pres/reveal.js-master/css/theme/league.css

pres/reveal.js-master/css/theme/moon.css

pres/reveal.js-master/css/theme/night.css

pres/reveal.js-master/css/theme/serif.css

pres/reveal.js-master/css/theme/simple.css