code: function initWithFile(configPath){
      var configString = fs.readFileSync(path.resolve(configPath));
  
      this.config = JSON.parse(configString);
      this.init(this.config);
  
      return this;
  }
docs: Method that will load configuration info for your adapters from a file.
  Method that will load configuration info for your adapters from a file.
  @param configPath path to your configuration file
  @returns {logger}