v0.2.2

It's about time I can back here and updated this library, since 9 people have thought it worth starring and all 🌟 😺

I've added support for Promises, and implemented support for a single sound to be played more than once at the same time.

I've also added an npm package called sound-box (soundbox was taken!) so use it that way if that's up your street (I can recommend it myself 😺)