docs: update README

Signed-off-by: AtomicFS <[email protected]>

README.md

@@ -5,9 +5,24 @@ Example usage of [firmware-action](https://github.com/9elements/firmware-action)
 
 ## How to use
 
+Firstly, install `firmware-action` as [described in documentation](https://9elements.github.io/firmware-action/firmware-action/get_started/04_get_firmware_action.html).
+
+### Simple example
+
+If running ArchLinux replace `task` with `go-task`.
+```bash
+git clone --depth 1 [email protected]:9elements/firmware-action-example.git
+cd firmware-action-example
+git submodule update --depth 1 --init --recursive
+task build:coreboot
+```
+
+### Complex example
+
+If running ArchLinux replace `task` with `go-task`.
 ```bash
 git clone --depth 1 [email protected]:9elements/firmware-action-example.git
 cd firmware-action-example
 git submodule update --depth 1 --init --recursive
-firmware-action build --config=firmware-action.json --target=coreboot-example
+task build:coreboot-linuxboot:recursive
 ```