Added product files from scaffold
Created product table with prec 8 scale 2
shortened form to 6 rows on new product
Added seed data
updated product stylesheet
added controller name (by convention) to layout class, product css shows up in product controller
Updated view for show all on products page
added basic validations to product model
added image regex validation to product on image url
updated tests now that product validations exist
added test fixture for ruby product to use in product unit tests. added some unit tests around validations