Abstract disqus into `_includes` folder.
Don't stretch code blocks
Change styles to be responsive.

Thanks to poole!
Add 404 page
Remove emoji plugin

I don't see myself using emoji's in posts.
Add atom.xml

Thanks to poole again!
Change highlighted color on footer
Change tagline
Add a responsive nav.

Credits to http://responsive-nav.com/. Good work, it was pretty easy to
implement on my part.
Fix up about page