Merge branch 'logger-winston-fix' into 'master'

Logger works

See merge request !16

logger.js

-const {​​​​​ createLogger, transports, format }​​​​​ = require('winston')
+const winston = require('winston');
 
-const logger = createLogger({​​​​​
+const files = new winston.transports.File({ filename: 'events.log' });
+
+const logger = winston.createLogger({
+  level: 'info',
+  format: winston.format.json(),
+  defaultMeta: { service: 'conduit-backend-service' },
   transports: [
-    newtransports.File({​​​​​
-      filename:'error.log',
-      level:'error',
-      format:format.combine(format.timestamp(), format.json())
-    }​​​​​),
-    newtransports.File({​​​​​
-      filename:'info.log',
-      level:'info',
-      format:format.combine(format.timestamp(), format.json())
-    }​​​​​),
-    newtransports.Console({​​​​​
-      level:'info',
-      format:format.combine(format.timestamp(), format.colorize(), format.json())
-    }​​​​​)
+    new winston.transports.Console()
   ]
-}​​​​​)
+})
+.add(files)
 
 module.exports = logger
\ No newline at end of file