plan plugin to download a file from s3
See also node-plan-s3-upload.
s3Url- s3 path to download
makeTemp- a function which generates a tempfile and accepts a suffix
tempPath- path to the temp file where the s3 file was saved
bucket- copied directly from options
S3_KEY=<valid_s3_key> S3_SECRET=<valid_s3_secret> S3_BUCKET=<valid_s3_bucket> npm test