message: Update ToC to moved Heroku section
diff: @@ -39,7 +39,6 @@ For a detailed introduction, full list of features and architecture overview ple
  ## Table of contents
  - [Setup](#setup)
  - - [Deploy on Heroku (free ($0/month) dyno)](#deploy-on-heroku-free-0month-dyno)
  - [From Sources](#from-sources)
  - [Packaged Distributions](#packaged-distributions)
  - [Docker Container](#docker-container)
  @@ -47,6 +46,7 @@ For a detailed introduction, full list of features and architecture overview ple
  - [Amazon EC2 Instance](#amazon-ec2-instance)
  - [Azure Container Instance](#azure-container-instance)
  - [Google Compute Engine Instance](#google-compute-engine-instance)
  + - [Heroku](#heroku)
  - [Gitpod](#gitpod)
  - [Demo](#demo)
  - [Documentation](#documentation)
  