Update documentation

[andyzito]

• [x] Initial README draft
• [x] Mention that docker subdirs are for prod deployment
• [x] Include Jest testing setup/usasge
• [x] Include Cypress testing setup/usage
• [x] Fix anchor links (GitHub markdown is not as cool as Obsidian markdown)

[kwiliarty]

That looks like a great list. Thanks for tackling this @andyzito .

[andyzito]

@kwiliarty I think this is in a good place so far. I'm gonna need a hand with the Jest/Cypress stuff, my notes there are not as thorough

[kwiliarty]

That looks good. I'll try to add the jest and cypress bits soon. Thanks again!

[kwiliarty]

@andyzito I've filled in some gaps. Let me know what you think and mark it ready for review when you are happy with it.

[kwiliarty]

Actually, I think I'll just integrate this. I really appreciate the help, and I hope you're having fun with it.