def approve(number)
      request = server.get_request_by_number(number)
      repo = server.source_repo
      # TODO: Make this configurable.
      comment = 'Reviewed and approved.'
      response = server.add_comment(repo, request.number, comment)
      if response[:body] == comment
        puts 'Successfully approved request.'
      else
        puts response[:message]
      end
    end
def approve(number)
      request = server.get_request_by_number(number)
      repo = server.source_repo
      # TODO: Make this configurable.
      comment = 'Reviewed and approved.'
      response = server.add_comment(repo, request.number, comment)
      if response[:body] == comment
        puts 'Successfully approved request.'
      else
        puts response[:message]
      end
    end
Add an approving comment to the request.