function footer( width, fill, type, n, total ) {
	var line = n.toString();
	if ( type === 'progress' ) {
		line += '/' + total;
	}
	line += ' ';
	return alignFlushRight( width, line, line.length, fill );
}
Creates a slide footer line.

@private
@param {PositiveInteger} width - slide width
@param {string} fill - fill character
@param {(string|boolean)} type - footer type
@param {PositiveInteger} n - slide number
@param {PositiveInteger} total - total number of slides
@returns {string} footer line