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README.md

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 ## 关于本书
 
-*Getting Started with Knative* 是一本由 Pivotal 公司赞助 O’Reilly 出品的电子书，英文版下载地址：<https://content.pivotal.io/ebooks/getting-started-with-knative>。
+*Getting Started with Knative* 是一本由 Pivotal 公司赞助 O’Reilly 出品的免费电子书，英文版下载地址：<https://content.pivotal.io/ebooks/getting-started-with-knative>。
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+在线阅读：<http://www.servicemesher.com/getting-started-with-knative/>
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+Github：<https://github.com/servicemesher/getting-started-with-knative/>
 
 ## 关于 Knative