Updated the layout of my sign in page and allow user sign in and sign up
Merge https://github.com/fmeade/miniHack

Conflicts:
	miniHack/app/views/layouts/_header.html.erb
	miniHack/app/views/pages/home.html.erb
	miniHack/db/migrate/20140521203720_devise_create_users
	miniHack/db/migrate/20140521203720_devise_create_users.rb
	miniHack/db/migrate/20140522134210_devise_create_users