docs: Add initial docs

docs/index.md

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+# Welcome
+
+Welcome to the documentation for the [bjw-s Helm charts](https://github.com/bjw-s/helm-charts) project.
+
+## Getting started
+
+[Helm](https://helm.sh) must be installed to use the charts in this repository.
+
+Refer to Helm's [documentation](https://helm.sh/docs/) to get started.
+
+## Installation
+
+```sh
+helm repo add bjw-s http://bjw-s.github.io/helm-charts/
+```
+
+You can then run `helm search repo bjw-s` to see the charts.
+
+## How do I find people running Kubernetes at home?
+
+### Discord
+
+Join the k8s-at-home [Discord](https://discord.gg/sTMX7Vh) community on Discord.
+
+### Repository topics
+
+Have a look at people running Kubernetes at home
+[on GitHub](https://github.com/topics/k8s-at-home?o=desc&s=updated) and
+<!-- Disable link check because it requires login -->
+<!-- markdown-link-check-disable-next-line -->
+[on GitLab](https://gitlab.com/search?search=k8s-at-home).
+
+### Awesome Home Kubernetes
+
+[Checkout](https://github.com/k8s-at-home/awesome-home-kubernetes) our curation
+of projects and resources involving running Kubernetes at home.
+
+## License
+
+This project is licensed under the terms of the Apache 2.0 License license.