add documentation

Author: shcherbak

README.md

@@ -1,5 +1,20 @@
 # Matrix-Stack
 
+
+## Helm repository
+
 ```
 helm repo add code-tool https://code-tool.github.io/matrix-stack/
 ```
+
+## Charts overview
+
+1. `synapse` - for setting up matrix workers, MAS, sliding-sync, admin component
+1. `ldap` - for setting up LDAP proxy
+1. `sentry-webhook` - for webhook from sentry to matrix chat
+1. `webhook` - for webhook from slack-compatible clients to matrix chat
+
+
+## Visualisation
+
+![Matrix home servers setup overview](overview.png)