* Add htmlproofer to verify links
Partially addresses #247
* Make htmlproofer a Rake task
* Verify that we don't have leftover Markdown links
* Don't build the full Ruby Sass docs before running htmlproofer
* Don't check generated documentation
* Fix a few more broken links
* Add another URL exception
* Limit which branches we run tests for
* Add more URL exceptions
* Added therubyracer to Gemfile. Without a JS runtime, middleman won't start
* Bumped ruby version from 2.2.3 to 2.2.7
* Simplified how Rakefile calls bundler, per http://bundler.io/v1.3/man/bundle-exec.1.html#Shelling-out
* Updated build instructions to include a step to build yard docs
- Added the favicons in the source directory
- Disabled the automatic favicon creator. It's doesn't need to run on build each time.
- Fixed the name of the icons in the meta data
* Moved CSS, JS, Images into an assets folder
* Adjusted the file structure a bit for CSS, JS, Images.
* Added a fonts folder
* Cleaned up the config a bit so it's easier to read through
* Added some KSS placeholders to tinker with a bit
* Added zepto.js so we can be a bit more friendly on mobile devices/modern browsers
* Added some basic responsive breakpoints
* Added a scaffold.css and theme.css so we can separate out layout pieces from the theme. This will let us retheme the site easier, or have multiple themes if we're feeling frisky
* Removed some HTML5 boilerplate pieces that we don't need
* Added some basic structural css partials
