merged dev branch

.gitignore

.travis.yml

CONTRIBUTING.md

Gruntfile.js

README.md

css/print/paper.css

css/print/pdf.css

css/reveal.bare.css

css/reveal.css

css/reveal.min.css

css/theme/beige.css

css/theme/blood.css

css/theme/default.css

css/theme/moon.css

css/theme/night.css

css/theme/serif.css

css/theme/simple.css

css/theme/sky.css

css/theme/solarized.css

css/theme/source/blood.scss