Download a directory from an Amazon S3 bucket as zip file.
var BucketZip = require('bucket-files');
var bucketZip = BucketZip.connect({
key: 's3-key',
secret: 's3-secret',
bucket: 'name-of-the-s3-bucket'
});
// Stream a zip file of a directory
// "res" is a node response object
bucketZip('some_dirctory_in_a_bucket').pipe(res);