refactor(recipe): don't use README.md path directly

cli/recipe/new.go

@@ -80,11 +80,7 @@ recipe and domain in the sample environment config).
 
 		meta := newRecipeMeta(recipeName)
 
-		toParse := []string{
-			path.Join(config.RECIPES_DIR, recipeName, "README.md"),
-			r.SampleEnvPath,
-		}
-		for _, path := range toParse {
+		for _, path := range []string{r.ReadmePath, r.SampleEnvPath} {
 			tpl, err := template.ParseFiles(path)
 			if err != nil {
 				log.Fatal(err)