change _createLogger to createLogger

src/bot/genericBot.js

@@ -18,7 +18,7 @@ module.exports = class GenericBot {
     constructor(botConfig) {
         this.botConfig = botConfig;
         this.streamHandler = new StreamHandler(streamConfigCreator.createStreamConfig(botConfig));
-        this.logger = loggerCreator._createLogger(botConfig);
+        this.logger = loggerCreator.createLogger(botConfig);
     }
 
     async inboxLoop() {

src/creator/loggerCreator.js

@@ -46,4 +46,4 @@ function _createLogger(botConfig){
   return logger;
 }
 
-module.exports = {_createLogger};
+module.exports = {createLogger: _createLogger};