Hydra-sdk

setup/rebuild: run 'npm install'

publishing the sdk:

- 'npm login' (do all the steps necessary)
- npm publish

guide: https://dev.to/mendoza/how-to-build-a-simple-sdk-on-typescript-21gg

TestingSDKChatApp

Running the test chat app:

- cd to TestingSDKChatApp dir:
- 'npm install' for dependencies (different from the SDK, if you've modified the SDK locally, re-run the npm install within that directory to get new changes picked up here)
- 'npm start'
- Console chat interface, to exist ' Ctrl+c' will end.