Finish README

Closes #3

README.md

@@ -1,2 +1,25 @@
-# syncovery_collector
-Prometheus Syncovery collector
+# Syncovery prometheus exporter
+
+Prometheus exporter for Syncovery backup software: https://www.syncovery.com/
+
+## Quick start
+
+```yaml
+# docker-compose.yml
+version: "3.9"
+services:
+  syncovery-exporter:
+    image: ghcr.io/andrzejressel/syncovery-exporter:0.0.2
+    command:
+      - --url=SYNCOVERY_URL
+```
+
+## Setup Syncovery
+
+Exporter using endpoint `/profile.json` which is available after adding `SkipProfileListAuth=1` to Syncovery config file. Because of latest changes related to encryption it has to be added a following way.
+
+1. Create local file `syncovery.ini` with content `SkipProfileListAuth=1`
+2. Login to Syncovery instance. Go to Program Settings
+3. Select `Import Config Lines (INI Style)...` and choose created file.
+
+You can limit IPs that endpoint is available to by using `SkipProfileListAuthForIP` option.