modified item_spec
added user class and user_spec
added test case to user_spec
added items attribute to users class
added test case to user_spec
added method to user class and fixed user_spec
added test to item_spec decided that item should have specific code
added method to users class, and corrected item_spec
renamed code to id
removed everything with id
modified user class and added item_list class
refaktored
refaktoring
added test to user spec
modified item_list class
fixed test case
added name test case to item_spec
fixed item.rb and item_spec.rb
added test to item spec that check if item can be renamed
added rename method to item class