Adding a link to get to 2.2 guides from main Guides menu.
Adding a divider.
Put "upcoming" on 2.2 guides menu. The guides pages look shockingly bare.
Adding book to footer.
News post about the MEAP.
Added book link to front page.
Fix column wrap.
Formatting.
Merge branch 'master' into 2.2

Conflicts:
	_includes/_lower_body.html
	_includes/_upper_body.html
	index.html