Ruby 2.3
enter "bundle install" in terminal to install dependencies
run "rspec" in terminal, this will run all tests. The http response has been cached to VCR, so no Internet are needed, except for testing the rest-client.
ruby application.rb
ENTER COMMAND [average category, help, list_category, quit]
list_category
Gadgets
Air Conditioners
Batteries
Cables & Adapters
Oral Care
Food Preparation
Scooters, Bicycles & Tricycles
Fitness Equipment
Automotive Accessories
LED Televisions
Carpet & Steam Cleaners
Vacuum Cleaners
Holders & Stands
SIM Cards
Prepaid Plans
Wall Mounts
Networking & Wireless
Travel Adapters
Travel Accessories
Pest Control
Android Phones
Shoes
average Air Conditioners
Average cubic weight for all products in Air Conditioners category is 41.61 kg