zsh compatibility

needs square bracket escaping
Remove duplicated Google Analytics JS from head.
Merge pull request #18 from gabrielluong/greyshade

Remove duplicated Google Analytics JS from head. Closes #17
Merge pull request #16 from serpent213/patch-1

Readme instructions are now zsh compatible
Push the mid-col to the bottom of the page. Fix for issue #13
Merge pull request #19 from matthewrobertson/master

The middle column now always occupies complete height of window. Fixes #13
Fixed footer border bleed problem, closes #14
implement basic-alignment rules and apply them on img
Merge pull request #20 from kalos/master

manage img alignment through css classes
Basic schema.org markup
The pubdate attribute is no longer valid html5. See http://www.brucelawson.co.uk/2012/best-of-time/
Merge pull request #21 from nathanshox/schema.org

Add Schema.org markup to blog posts
Last section closing tag was missing in archives page. Fixes #22
Changes to Google Plus Author Tag
Merge pull request #23 from desinle/master

Google Plus Author Tag
Image tag wasn't closed
Downcase email before hashing

According to the Gravatar docs, all emails should be converted to all
lowercase before hashing.

See: http://en.gravatar.com/site/implement/hash/
Merge pull request #25 from 5thWall/patch-1

Downcase email before hashing for gravatar
Merge branch 'virtser-patch-1'

Conflicts:
	source/_includes/header.html