Document using edgehead with alternative input/output mechanisms (like Google Assistant)

[xrd]

I'm thinking about how I could use edgehead with things like Google Home / Google Assistant and storing the assets in alternatives to text.

As a starting point for inputs, wondering if you would want to change something like @GatherWriterInputFrom(const ['assets/text/**/*']) to pull from Firebase or a database.

As a starting point for outputs, would you want to consider changing CliRunner into an abstract class that could use DialogFlow for NodeJS when you want to run the story through the Google Assistant?