303 homework
Merge branch 'master' of github.com:davincicoders/2013-q2-rails-1
Added example 318.
Code style tweaks.
Added example 320.
Added example 322.
Merge branch 'master' into DS

Conflicts:
	303/303.rb
	303/views/layout.erb
	303/views/login.erb
	303/views/reservations.erb