Additions and enhancements (#14)

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

cmd/ccr.go

@@ -37,6 +37,7 @@ func Ccr(conf *cfg.Config) *cli.Command {
 			CcrShardPause(conf),
 			CcrShardResume(conf),
 			CcrFollower(conf),
+			CcrRemoteInfo(conf),
 		},
 	}
 }
@@ -101,3 +102,15 @@ func CcrShardResume(conf *cfg.Config) *cli.Command {
 		},
 	}
 }
+
+func CcrRemoteInfo(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:      "info",
+		Usage:     "show ccr remote info",
+		UsageText: "info [options] [<index>]",
+
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			return es.CcrRemoteInfo(conf, cmd.Args().Get(0))
+		},
+	}
+}