def initialize(options={})
      @tick_lbl_skip = 1
      @tick_mark_skip = 1
      self.auto = 1
      self.lbl_algn = :ctr
      self.lbl_offset = "100"
      super(options)
    end
Creates a new CatAxis object
@option options [Integer] tick_lbl_skip
@option options [Integer] tick_mark_skip