Refactoring and documentation
Refactoring and documentation

dou800/text-to-speech-nodejs,hmagph/text-to-speech-nodejs-with-saucelabs,dou800/text-to-speech-nodejs,sktay/text-to-speech-nodejs,sktay/text-to-speech-nodejs,hmagph/text-to-speech-nodejs-with-test,skaegi/text-to-speech-nodejs-with-saucelabs,colinsf/text-to-speech-nodejs,hmagph/text-to-speech-nodejs-with-test,watson-developer-cloud/text-to-speech-nodejs,hmagph/otcnov10demo,colinsf/text-to-speech-nodejs,hmagph/text-to-speech-nodejs-with-saucelabs,hmagph/otcnov10demo,skaegi/text-to-speech-nodejs-with-saucelabs