Additions and enhancements (#14)

- add interactive API repl
- enhance cluster status output (use -v)
- add more ccr commands
- refactoring

pkg/es/index.go

@@ -202,3 +202,17 @@ func IndexDelete(conf *cfg.Config, index string) error {
 
 	return nil
 }
+
+func IndexClose(conf *cfg.Config, index string) error {
+	create := conf.DefaultCluster.ES.Indices.Close(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json")
+
+	_, err := create.Do(context.Background())
+
+	if err != nil {
+		return fmt.Errorf("failed to close index: %s", err)
+	}
+
+	return nil
+}