Merge pull request #8 from kelliwarren/master

fixed tests for create and update product
adds product model unit test for validations
adds test for price and url in product model
Validation
Merge pull request #9 from ageobab/master

Validation
fixes product_test.rb and fixture/products.yml file
Yo A-Aron
ugly by the book index styling
Merge pull request #10 from ageobab/master

awww yea
adds css to application.rb adds functional test to controller_test adds caching to store/index.html
scaffold lineitem and made add to cart button