add t.integer:price to MenuItem migration
run create_table migration
generate migration for CreateIngredients
run create ingredients table migration
drop ingredients table
generate ingredients model
run migration to create ingredients table
add has_many association to ingredient and menu_item
generate MenuItem_Ingredient model
run migration to create menu_item_ingredients join table
fix typo in has_many relationships, add hirb to gemfile
fix plural error in though: :menu_item_ingredient
join table now works. can access a menu items ingredients through menu_item.ingredients