Support array parameters

[edno]

Extend parameter support to array

Feature: Array parameter
  In order to create dynamic Gherkin scenario
  As a tester
  I need to be able to retrieve array parameters

  Scenario: Scenario using simple parameter
    Given I have an array "test" with value "[1,2,3,4,5]"
    Then I should see "{{test[0]}}" equals to "1"

Similarly for JSON objects, I should be able to compare them with a JSON string (gherkin snippets should implement the comparison logic, the module should only return the value of the param)