added controller and validations in model
added validation to orderitem model, added controller
fixed orders migration by removing o.i. array
Merge branch 'orders' into orderitems
Merge branch 'master' of https://github.com/katke/mano
fixed db
Merge branch 'master' of https://github.com/katke/mano
added shoppingcart and vendor controllers
set up associations in order and orderitem models
Merge branch 'master' of https://github.com/katke/mano
change purchaser to buyer in db tables
Merge branch 'master' of https://github.com/katke/mano
set up categoryproducts
product work, and category database
Merge branch 'master' of https://github.com/katke/mano
category controller
added hasmany for product
added hasmany catprod to product class
added store_name column to vendors table
resolved buyer.rb merge conflict