cas3

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S3-backed content addressable storage.
Store files by their sha256 sum.
Automatically compresses it in S3 if it's compressible.

var cas = new CAS(options)

``js
var CAS = require('cas3')
var cas = new CAS(options)
`

Options are:

- bucket - s3 bucket name
- key - s3 key
- secret - s3 secret key
- cdn - optional CDN host, defaulting to the s3 bucket, such as https://lakjsflkajfd.cloudfront.net

$3

Get an S3 key from a string or a buffer and an extension.

`js
var key = await cas.key('some string', 'txt')
``

$3

Get a URL for the key, depending on whether you'd like to use the S3 bucket directly or a CDN.

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