Create CNAME file
Remove CNAME
Refactor CSS to Sass.

- Add a modulated SCSS file structure
- Refactor CSS into SCSS, and divide into respective directories and
files
- Include flexbox and background property mixins to handle vendor
prefixing
Merge branch 'gh-pages'
Add about page content
Make footer stick to bottom
Remove Contact page and link. Contact info in About.
Make About page responsive. Remove footer.
Remove media query for nav item margin