feature/add-actions (#9)

Co-authored-by: kjuulh <contact@kjuulh.io>
Reviewed-on: https://git.front.kjuulh.io/kjuulh/kraken/pulls/9

_examples/actions/write_a_readme/main.go

@@ -3,7 +3,10 @@ package main
 import "github.com/bitfield/script"
 
 func main() {
-	script.
+	_, err := script.
 		Echo("# Readme").
 		WriteFile("README.md")
+	if err != nil {
+		panic(err)
+	}
 }