Convert to Jekyll site

- Ignore sass cache, node_modules, jekyll _site compiled folder, build
  compiled folders
- Add grunt task and set up Gruntfile for building sass files
- Major change: turn the original HTML into Jekyll with includes,
  layouts
- Add CNAME in preparation for gh-pages
- Add .htaccess to redirect www to non-www
- Add all variations of favicons and iOS starter images
- Add MSDS info as a pdf for download
- Add humans.txt and include team
- Add resources directory to include project files