CSV Aggregation Tool
Run 'npm install'
Put your csv files into 'csv_data' folder and update 'filenames'
var filenames = [
'DE_2014JunMonthlyTransaction.csv',
'ES_2014JunMonthlyTransaction.csv',
'FR_2014JunMonthlyTransaction.csv',
'IT_2014JunMonthlyTransaction.csv',
'UK_2014JunMonthlyTransaction.csv'
];