add product scaffold, seeds, and basic style
add validations and unit tests for products
create store controller view and tests
implement fragment caching for portions of the store page
add Cart and LineItem scaffolds
add Cart and LineItem model references
create relations between carts, line_items, and products; added Add to Cart button
Add quantity column to line_items and incorporated into view
Add Empty cart function
Add price to line_items and delete line_item button
Merge pull request #2 from Lyonsclay/setup

Setup