Need to fix for Node

[jonniespratley]

$  babel-node ./scripts/start.js   
/Users/jspratle/Github/sdk-component-adapter/src/utils.js:128
const isSpeakerSupported = !!document.createElement('audio').setSinkId;
                           ^

ReferenceError: document is not defined
    at Object.<anonymous> (/Users/jspratle/Github/sdk-component-adapter/src/utils.js:119:35)

Need to fix the conditional to handle when running in NodeJS