Provide machinery to use this framework without globals.

[izaakschroeder]

Having global shared state is always a bad thing™. So we allow the creation of individual instances of streaming clients, each with their own associated AWS.S3 instance. The new code looks something like:

var client = require('s3-upload-stream')(AWS.S3());
var stream = client.upload({
  bucket: "...",
  key: "..."
})

Backwards compatibility is also shoehorned so those who are using the library can continue to do so just as they were before.

Version bump accordingly.

[nathanpeck]

That's a good improvement. I adjusted the documentation, examples, and tests to use this improved technique, and published as 1.0.6

Thanks

[izaakschroeder]

:+1: