Added credit for Wierd.

Merge branch 'main' of https://github.com/crate/devrel-pdf-rag-chatbot

Update README.md

Formatting updates.

README: Fix Git repository location (#6)

Added links to live stream signups.

Standardized on using chatbot not chat bot.

Added basic overview of the data extractor.

Little more work on the READMEs.

Added env file setup details.

Added PDF folder explanation.

Added note about providing example PDFs.

Moved the PDF files section to main README.

Added details of example PDFs.

Set a couple of env var values.