Documentation on basic dev loop is missing

[elisechant]

For me, there's great information here about cloning and installing the monorepo, but there's a critical section missing which describes how to use the monorepo as part of a user's dev loop.

We should include short but concise information, covering:

• how to run a dev loop - why not demonstrate the sample website in ./website using create-react-app for example
• where to install modules
• that there is only one git root (unlike other monorepo patterns)
• how to deploy - why not demonstrate this using now.sh or surge.sh?

Secondly, we should surface this information in longer form in the monorepo-guide.