[WIP] - Refactor SoundJS lib with good practices

[calebesantos]

Hello, I have a college evaluation to help with good coding practices a repository.
I hope my changes helps xD

Best practices or guidelines related to:

• Functions
• Variables, objects or data structures
• Defensive programming or error handling
• Classes

[gSkinner-Blair]

Hey there! Thanks for the contribution! We'll review this when we get a chance to see if there's good value in these changes. Unfortunately, we might not get to it right away - vetting these changes might be a fairly large task given the amount of them, and things like needing to make sure this works with our autodocs etc. Right now our priority on the CreateJS libraries is working on the 2.0 versions, which in the case of SoundJS 2.0, is a complete rewrite.

[calebesantos]

Thanks for review! Your feedback was very important!

[mymomscrazy]

Genius reply. Thank you so much