Google+ tweaks
Remove background texture
Fix triangle and make image-wrap span page width on > 1382px
Fix head-wrap position
Fix trailing slash in documentation
Update Google Analytics tracking id
Fix typos in feed.xml
Correct date
Update theme screenshot
Add configurable external links to top navigation. Resolves #5
Style inline code snippets
Make _config.yml more generic
Optional Google Analytics, Google Authorship, webmaster verifies, and Twitter cards meta.
Squashed