def initialize(options = {})
       parse_options options
    end
Creates a new PageSetup object
@option options [Integer] fit_to_height Number of vertical pages to fit on
@option options [Integer] fit_to_width Number of horizontal pages to fit on
@option options [Symbol] orientation Orientation of the page (:default, :landscape, :portrait)
@option options [String] paper_height Height of paper (number followed by unit identifier: "297mm", "11in")
@option options [String] paper_width Width of paper (number followed by unit identifier: "210mm", "8.5in")
@option options [Integer] scale Print scaling (percent value, integer ranging from 10 to 400)
@option options [Integer] paper_size - the size of paper to use