Composite and composite recorder examples

[mayos]

Dear creators,

Thank you for your work. Please review my examples code, hope this will be helpful for newbies.

[mklueh]

Thank you for your examples!

A half year later, and still not merged with the main repo?!

[mayos]

I think this should be rewritten with new ES2015 features, especially using the Promises.

Here we have the asynchronous hell. Use it only to be acquainted with the possibilities.

[igracia]

@mayos Really sorry about that! Please do update the code and we'll merge it with the rest of the tutorials. We might also end up with a contributions repo, but don't think that'll be the case.

Thank you very much for your code!