Node.js upload to AWS S3

s3upload.js

// requires AWS SDK
var AWS = require('aws-sdk')
  , fs = require('fs');

var s3 = new AWS.S3({
  apiVersion: '2006-03-01',
  accessKeyId: 'AccessKey',
  secretAccessKey: 'SecretKey',
  region: 'region'
});

fs.readFile('filename.jpg', function(err, data) {
  var params = {
    Bucket: 'bucket-name',
    Key: 'bucket/directory',
    Body: data,
    ContentType: 'image/jpg'
  };
  s3.putObject(params, function(err, res) {
    if (err) {
      console.log('error');
      console.log(err);
    } else {
      console.log('success');
      console.log(res);
    }
  });
});