Make the footer

It includes the license and copyright information.
Tweak foot styles and add to page in main layout

This tweaks the styles of the footer some, and moves it addition to the page into the main layout so that it's automatically added to all pages.
Merge pull request #68 from okuryu/foot

Add basic footer to site
Upgrade es6-shim and express-handlebars deps
Upgrade intl deps
Merge pull request #70 from ericf/upgrade-intl-deps

Upgrade Intl dependencies
Add relative format examples to site

This adds relative formatting examples to the home page, and both the
Handlebars and React integration pages. Dust will be added once the
Dust helpers lib is updated.
Add comment around weird `lastMonth` in Home route
Merge pull request #72 from ericf/relativeformat

Add relative format examples to site
Merge branch 'master' into dust

Conflicts:
	public/css/style.css
	views/pages/guide.hbs