Add an initial "pub lish" command.

utils/pub/pub.dart

Index: utils/pub/pub.dart
diff --git a/utils/pub/pub.dart b/utils/pub/pub.dart
index 4c2f77e878a45d136f7f6fb7502e1f81ed8772fe..3ce10b462734f7402f18a4ffe2bb21317271d1c2 100644
--- a/utils/pub/pub.dart
+++ b/utils/pub/pub.dart
@@ -13,6 +13,7 @@ import 'dart:math';
 import 'io.dart';
 import 'command_help.dart';
 import 'command_install.dart';
+import 'command_lish.dart';
 import 'command_update.dart';
 import 'command_version.dart';
 import 'entrypoint.dart';
@@ -36,6 +37,7 @@ Version get pubVersion => new Version(0, 0, 0);
 Map<String, PubCommand> get pubCommands => {
   'help': new HelpCommand(),
   'install': new InstallCommand(),
+  'lish': new LishCommand(),
   'update': new UpdateCommand(),
   'version': new VersionCommand()
 };