Attach MediaStream to returned Stream from recognizeFile/recognizeMicrophone

[jeff-arn]

Package version: 0.35.4

Currently, when calling recognizeFile or recognizeMicrophone, multiple child streams are returned within the response. It would really handy to have a MediaStream returned as well, for people who want to do things like visualization or any audio manipulation.

[germanattanasio]

Thanks a lot for filing this issue! Would you like to write a PR for this? I'd be more than happy to walk you through the steps involved.

[germanattanasio]

@nevrologica Thanks for your research. Would you be willing to write a PR with a simple example?

I tried xbalance.gr/brainy and it works in Chrome. The waveform looks nice.
I have been thinking that a polyfill may catch some of the cross-browser issues we have.
Sadly, I don't have time to do the research

[germanattanasio]

I added the example that @nevrologica wrote as part of #159