Project 04: Added depot.css and images, updated skeleton code

Added new layout to the code, made seeds file for others to use
Project 04: Added Validation of fields and fixed failing tests

Added logic to ProductsControllerTest to fix the failing tests.
Updated the Product to validate all fields.
Project 04: Added unit tests for testing a product

Added tests for product attributes not being empty, price being positive, and image url being valid
Project 04: Added first fixture

Learned how to use fixtures, and added a test one
Project 04: Added test using new fixture, fixed images not loading

Added a test that uses the test database fixture and fixed the images not loading properly.
Project 04: Playtime: Added length validation and fixed hash symbols

Changed up the way I use hash symbols.
If it's just a single hash, key and value, I use key: value.
If it's a hash in a hash, e.g. key and { key and value },
I use :key => { :key => value }