bundle exec cucumer

$ bundle exec cucumber
Using the default profile...
Feature: Manage Contacts
  In order to keep my contacts' phone numbers
  As a popular person
  I want to make a Contact List

  Scenario: Empty Contact List             # features/manage_contacts.feature:6
    Given I have no contacts               # features/manage_contacts.feature:7
      Undefined step: "I have no contacts" (Cucumber::Undefined)
      features/manage_contacts.feature:7:in `Given I have no contacts'
    When I go to the contact list          # features/manage_contacts.feature:8
      Undefined step: "I go to the contact list" (Cucumber::Undefined)
      features/manage_contacts.feature:8:in `When I go to the contact list'
    Then I should see "No contacts found." # features/manage_contacts.feature:9
      Undefined step: "I should see "No contacts found."" (Cucumber::Undefined)
      features/manage_contacts.feature:9:in `Then I should see "No contacts found."'