docs: update readme

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Build goldboot image
-        uses: fossable/goldboot-action@master
+        uses: fossable/goldboot-action@main
         with:
           output: image.gb
 

README.md

@@ -1,2 +1,11 @@
 ## goldboot template
 
+To get started quickly, you can use this repository as a template! Just
+follow the below instructions:
+
+1. Click the **Use this template** button at the top of the repository
+1. Select **Create a new repository**
+1. Select an owner and name for your new repository
+1. Click **Create repository**
+1. Clone your new repository
+1. Customize your image with `goldboot.json`