Merge branch 'release/1.1.2' into develop

Update theme setup documentation

Darken code background

Add Twitter Card summary large image

Merge branch 'feature/build-script' into develop

Optimize images

Minor adjustments to TOC and author sidebar

Gruntify stylesheets

Update scripts

Init Gruntjs build script

Merge branch 'hotfix/404-page' into develop

Add custom 404 page

Merge branch 'release/v1.1.0' into develop

Merge branch 'release/v1.1.0'

Improve typography of .article-author

HTML cleanup

Improve style of highlighted syntax

Fix .image-pull-right overlap with paragraph text

Add image attribution

Remove headline wrap and fix schema tag on post/page title's