Merge pull request #881 from awsmsrc/feature/rm_output

indicate a successful removal of a machine

commands.go

@@ -654,6 +654,7 @@ func cmdRm(c *cli.Context) {
 	if isError {
 		log.Fatal("There was an error removing a machine. To force remove it, pass the -f option. Warning: this might leave it running on the provider.")
 	}
+	log.Print("The machine was successfully removed.")
 }
 
 func cmdEnv(c *cli.Context) {