Display "it" in RSpec example documentation format output

doc_it.rb

require 'rspec/core/formatters/console_codes'
require 'rspec/core/formatters/documentation_formatter'

# Display "it" in RSpec doc format output
# $ rspec spec/foo/bar_spec.rb --format DocIt

class DocIt < RSpec::Core::Formatters::DocumentationFormatter
  RSpec::Core::Formatters.register self,
                                   :example_passed,
                                   :example_pending,
                                   :example_failed
  def example_passed(passed)
    output.puts passed_output(passed.example)
  end
  
  def example_pending(pending)
    output.puts pending_output(pending.example,
                               pending.example.execution_result.pending_message)
  end
  
  def example_failed(failure)
    output.puts failure_output(failure.example)
  end
  
  private
  
  def doc_it_ouptut(example)
    "It #{example.description.strip}"
  end
  
  def passed_output(example)
    RSpec::Core::Formatters::ConsoleCodes
      .wrap("#{current_indentation}#{doc_it_ouptut(example)}", :success)
  end
  
  def pending_output(example, message)
    RSpec::Core::Formatters::ConsoleCodes
      .wrap("#{current_indentation}#{doc_it_ouptut(example)} " \
            "(PENDING: #{message})",
            :pending)
  end
  
  def failure_output(example)
    RSpec::Core::Formatters::ConsoleCodes
      .wrap("#{current_indentation}#{doc_it_ouptut(example)} " \
            "(FAILED - #{next_failure_index})",
            :failure)
  end
end

spec_helper.rb

 require 'support/formatters/doc_it'