message: update docs for refresh token
diff: @@ -10,6 +10,13 @@ This deploys two CDK stacks that produce an Alexa Skill backed by a Lambda Funct
  1. An Amazon Developer account from: https://developer.amazon.com/
  1. A developer account security profile: https://developer.amazon.com/loginwithamazon/console/site/lwa/create-security-profile.html
  1. An AWS Account with CLI Access
  +1. ASK CLI configured on your local machine: https://developer.amazon.com/en-US/docs/alexa/smapi/quick-start-alexa-skills-kit-command-line-interface.html
  +1. Once you have the ASK CLI and a developer account security profile, you must generate a refresh token to be used in the configuration of your skill, steps below
  +
  +### Generate a Refresh Token from the ASK CLI
  +1. Run the following command `ask util generate-lwa-tokens`
  +1. Enter your newly created security profile's ClientID and ClientSecret
  +1. Copy the `refresh_token` to be used in the next step
  ## Before You Deploy
  You need to add your ClientID, ClientSecret, Refresh Token and VendorID to the skill resource which can be found in `the-alexa-skill-stack.ts`
  