add sass for doc site
add small js file for docs site
add layouts for markdown and handlebars
add a header and footer for the docs site
stub out pages for the doc site
move examples into site > source > examples
move documentation to site > source > documentation
add sass-cache and site > build to gitignore
add assemble, sass, and a few other dependencies to package.json
set up Gruntfile.js with  task that starts a preview server and a watch task for developing doc