SYNOPSIS

# this will write both a CSV and an XLS file
my $exporter = Catmandu::Exporter::Multi->new(exporters => [
Catmandu::Exporter::CSV->new(file => 'mydata.csv'),
Catmandu::Exporter::XLS->new(file => 'mydata.xls'),
]);
$exporter->add({col1 => 'val1', col2 => 'val2'});
$exporter->commit;