Update README

README.md

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 # release-data
-Common Release Data for various projects in a consumable format
+
+Common Release Data for various projects in a consumable format. Current format is:
+
+* `filename` matches the corresponding filename in the products/ directory in endoflife.date repository.
+* Top-level keys are version strings.
+* Non-stable versions are not included (nightly, beta, RC etc)
+* Values are release dates in YYYY-MM-DD format
+* Wherever possible, dates are as per the release-timezone.
+
+## Guiding Principles
+
+* Scripts that update this information should be stand-alone and simple.
+* Code should not rely on existing data, and built it from scratch. (In case upstream information changes, we should reflect this change)
+* It should be easy to add a new script in any language.
+* Run everything on GitHub Actions.
+
+## Currently Updated
+
+As of Oct-2022, 83 of the 136 products tracked by endoflife.date have automatically tracked releases:
+
+- almalinux
+- alpinelinux
+- amazon-linux
+- angular
+- ansible
+- api-platform
+- blender
+- bootstrap
+- composer
+- consul
+- couchbase-server
+- django
+- docker-engine
+- dotnet
+- drupal
+- drush
+- eks
+- elasticsearch
+- electron
+- elixir
+- emberjs
+- eurolinux
+- fedora
+- ffmpeg
+- gitlab
+- godot
+- go
+- haproxy
+- hashicorp-vault
+- hbase
+- ios
+- ipados
+- jquery
+- kotlin
+- kubernetes
+- laravel
+- linuxkernel
+- log4j
+- macos
+- magento
+- mariadb
+- mediawiki
+- mongodb
+- mysql
+- nextcloud
+- nginx
+- nix
+- nodejs
+- nomad
+- opensearch
+- openzfs
+- oraclelinux
+- pan-gp
+- perl
+- php
+- postfix
+- postgresql
+- powershell
+- python
+- qt
+- rabbitmq
+- react
+- redis
+- redmine
+- rockylinux
+- roundcube
+- ruby
+- ruby-on-rails
+- solr
+- spring-framework
+- symfony
+- tarantool
+- terraform
+- tomcat
+- ubuntu
+- unrealircd
+- varnish
+- vue
+- wagtail
+- watchos
+- wordpress
+- zabbix
+- zookeeper