===== アプリケーション名の変更 =====
==== コマンド形式 ====
<code bash>
apps:rename <old-app> <new-app>
</code>

==== 実行例 ====
=== コマンド ===
<code bash>
dokku apps:rename node-js-app io-js-app
</code>

=== 出力結果 ===
<code>
-----> Creating io-js-app... done
Destroying node-js-app (including all add-ons)
       Unlinking from railsdatabase
App node-js-app has not been deployed
-----> Cleaning up...
-----> Cleaning up...
Renaming node-js-app to io-js-app... done
</code>