visual regression testing and other docs added/updated on grunt page.
code bg colour change
Merge branch 'gh-pages-next' of https://github.com/tmwagency/kickoff into gh-pages-next

# By Ashley Nolan
# Via Ashley Nolan
* 'gh-pages-next' of https://github.com/tmwagency/kickoff:
  Updating some font sizes across the site

Conflicts:
	learn/grunt.md
decided to remove the github logo because page is now imbalanced