class Conf
	def initialize
	@data = {
		'logfile' => 'log.txt',
		'dotimage' => 'bolilla.png',
		'format' => 'png',
		'colorimage' => 'colors.png',
		'opacity' => "0.50",
		'dotwidth' => 64
	}
	raise "log file not found" \
	unless File.exist?(@data['logfile'])
	raise "dot image not found" \
	unless File.exist?(@data['dotimage'])
	raise "color image not found" \
	unless File.exist?(@data['colorimage'])
	end
	attr_reader :data
end