def initialize(options = {})
      initialize_defaults
      @name = 'TableStyleMedium9'
      parse_options options
    end
creates a new TableStyleInfo instance
@param [Hash] options
@option [Boolean] show_first_column indicates if the first column should
be shown
@option [Boolean] show_last_column indicates if the last column should
be shown
@option [Boolean] show_column_stripes indicates if column stripes should
be shown
@option [Boolean] show_row_stripes indicates if row stripes should be shown
@option [String] name The name of the style to apply to your table.
Only predefined styles are currently supported.
@see Annex G. (normative) Predefined SpreadsheetML Style Definitions in part 1 of the specification.