Add --init flag to create a new Taskfile

init.go

@@ -0,0 +1,29 @@
+package task
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+)
+
+const defaultTaskfile = `# github.com/go-task/task
+
+default:
+  cmds:
+    - echo "Hello, World!"
+`
+
+func initTaskfile() {
+	for _, f := range []string{"Taskfile.yml", "Taskfile.toml", "Taskfile.json"} {
+		if _, err := os.Stat(f); err == nil {
+			log.Printf("A Taskfile already exists")
+			os.Exit(1)
+			return
+		}
+	}
+
+	if err := ioutil.WriteFile("Taskfile.yml", []byte(defaultTaskfile), 0666); err != nil {
+		log.Fatalf("%v", err)
+	}
+	log.Printf("Taskfile.yml created in the current directory")
+}