Doc add

[jiuyuegui]

add navigator translation

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❌ ���君
❌ 之君

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[vczero]

Hi, @jiuyuegui
这个翻译很棒，但是有两件事需要做一下：

1. Storage weexteam/article#78 这篇文章有些地方需要处理：
   1） 文章中Storage翻译成“缓存”有些不合理, 可以修改成“本地存储”
   2） “...或者更新已经存在的键” 这句翻译有误，应该是“该方法可以通过键值对的形式将数据存储到本地。同时可以通过该方法，更新已有的数据。”
   3） 文中“键名”最好是“键值”

2.需要签署 licence/cla（Contributor License Agreement）协议才能进行合并。

因此，我需要等你这两个修改完成后才能合并。

有问题，随时 at 我，多谢，：）

[Jinjiang]

@jiuyuegui Because a long time CLA not signed. We commit #1227 and merged instead.
But always thanks.