Added support for Family Strokes.

src/logger.js

@@ -3,6 +3,7 @@
 const util = require('util');
 const winston = require('winston');
 const args = require('./argv');
+require('winston-daily-rotate-file');
 
 const logger = winston.createLogger({
     format: winston.format.combine(
@@ -19,6 +20,11 @@ const logger = winston.createLogger({
             ),
             timestamp: true,
         }),
+        new winston.transports.DailyRotateFile({
+            datePattern: 'YYYY-MM-DD',
+            filename: 'log/%DATE%.log',
+            level: 'silly',
+        }),
     ],
 });