First published official Music Man alexa skill using golang

Certified and published by Amazon for use on Alexa. This version adds Location based queries, fixes a couple reprompt issues, adds a region attribute support (for English IN) locales, and is running on AWS Lambda using golang (allowing for deprecation of old Java version). Lastly, fixed some minor CircleCI and Serverless .yml issues - updated to latest serverless framework, and updated circleci.yml deploy section.