Add comprehensive documentation for make formats and all generated files:
- blog.json (JSON Blog format at root)
- feeds/all.json (JSON Feed v1.1)
- llms.txt (AI agent onboarding)
- index.md (Markdown versions)
- index.txt (plain text versions)
Documents purpose, usage, requirements, and individual make targets
(rst2md, jsonfeed, jsonblog, plaintext, llms).
modified: .gitignore
modified: Makefile
modified: README.rst
new file: content/2019-11-08-unity-collab-not-working-on-fedora-because-of-invalid-ca-certificate-path.rst
new file: content/uploads/2019/unity-collab-fedora-ca-certificate-error-curl.png
new file: content/uploads/2019/unity-collab-fedora-ca-certificate-error-fixed.png
new file: content/uploads/2019/unity-collab-fedora-ca-certificate-error-no-link.png
new file: vars.fish.tmpl
