order and line_item models and migrations and relationships
use decimal for arithmetic precision
rspec syntax for capybara
actually, not correct to include rails_helper here. the file itself suggests it be kept as light as possible
line item model and spec. order model and spec. corresponding migrations
Merge branch 'luke' of github.com:ianderse/dinner_dash into luke

Conflicts:
	db/schema.rb
protect from null values
Merge pull request #36 from ianderse/luke

Need to add relationships between order and user to get tests to pass