Documentation: How to increase the logging level #302

I can't find any documentation on how to increase the logging level. That'd be very helpful to have documented so that when you run into an issue (like I did in #301), you can more easily debug it. I resulted to a hack like this after poking around in the code and old pull requests for a while. I'm sure there's a much easier way - probably with some env var.

import { updateDynamoEasyConfig } from '@shiftcoders/dynamo-easy';

updateDynamoEasyConfig({
   logReceiver: console.log,
});