Like adding buying book feature, we are going to add "remove_book.feature" from shopping cart under "features" folder.
cd features
touch remove_book.feature
Then we need to add following content to it.
Feature:
In order to purchase it later
As a consumer
I want to add a book to my shopping cart
Scenario: Consumer can add a book to shopping cart
Given I open "http://www.amazon.com"
When I search for "The Lean Startup"
And I open the first book
And I add the first book to shopping cart
And I remove the book from my shopping cart
Then I should not see the book in my shopping cart