Merge pull request #17 from lazy-electron-consulting/2-cross-compile

improve docs

Author: ryepup

README.md

@@ -3,9 +3,20 @@
 [Prometheus exporter](https://prometheus.io/docs/instrumenting/exporters/) for
 Renogy charge controllers.
 
-Usage: `./renogy-exporter config.yaml`
+## Usage
 
-See `renogy.yaml` for an example of the config syntax.
+- download a binary from the github releases or build from source using `make
+  build`
+- connect your computer to a renogy device, I'm using a renogy brand [RS485 to USB serial cable](https://www.renogy.com/rs485-to-usb-serial-cable/)
+- run `./renogy-exporter config.yaml`
+- see your metrics via http
+
+See `renogy.yaml` for an example of the config syntax that works for me.
+
+## Releasing
+
+- merging to `main` will make new "latest" binaries
+- push a tag w/ `v$SEMVER` to make a versioned binaries
 
 ## References