Feature request: Add Expected Keyword to "feature"

[algritz]

Hello, first, thanks a lot for Spinach, it is a wonderful tool to work with.

This issue is a feature request.

I would love to have the ability to add the keyword "Expected" in the .feature definition under any steps. Our auditors requires us to be extremely explicit about what our automated tests do and it can be a pain to maintain the documentation of what test does what including the expected results. One way I managed to get around that is to use the hooks architecture to generate the file they expect. This allowed me to have the scripts kinda self-generate the documentation. The only part I am lacking at this point is the "expected results" for each step.

The way I see this could be used is in the "feature" files, kinda in that fashion (here's a pseudo version):

@web_test
Feature: Web_test
  In order to test the web application 
  As a user
  I want it to access the web application and execute a series of action
  
  Scenario: User access the Web Application
    Given I have test properties defined
        Expect Values used are valid
    And I have logged in to a zone
        Expect to log in successfully
    When I click the About box information
        Expect Information box to be displayed
    Then Validate the Application version displayed
        Expect the Application version to match the expected value

I understand that adding the "expected" keyword wouldn't bring much functionality to Spinach itself, but this would help a lot in my work.

I would understand if this is declined, if that is the case, is there a way to achieve something similar in the current situation?

Thanks!