Merge pull request #19 from d3adb5/docs/elaborate-in-readme

docs: revamp repository readme

README.md

@@ -1,3 +1,21 @@
-# Argo CD Applications
+# App of Apps
 
-This repository contains applications to be deployed using Argo CD.
+This repository contains the root application responsible for deploying all
+other applications in my private Kubernetes cluster through Argo CD. It
+implements the Argo CD App-of-Apps pattern.
+
+## Helm Charts & OLM
+
+Some applications that are deployed through this repository do not have
+officially supported Helm charts. In these cases, I have created my own. Some
+applications are deployed through the Operator Lifecycle Manager (OLM) instead,
+and in this repository they are added as `Subscription` resources.
+
+## CI/CD
+
+There is limited opportunity for CI/CD in this repository as it exists today.
+Where applicable, ephemeral environments may be created through Argo's
+`ApplicationSet` resource, which has support for GitHub merge requests. To show
+differences in how applications will turn out, a workflow was added to run
+`argocd app diff` for the root application, with plans to expand to all
+applications that are being modified in the future.