added suport for winston adapters

To use add adapters to your log.js file similar to below

```Javascript
log: {
    level: 'info',

    adapters: {
      LogstashUDP: {
        module: 'winston-logstash-udp',
        port: 8150,
        appName: 'my_cool_sails_app'
      }
    }
  }
```