Update README_CN.md

[copyrogers]

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zh: 我们需要您为每个新的 example 添加 run.sh 与 test.sh 以便于用户运行和 CI 测试，如果您不知道如何添加，请参考其他 example 的 run.sh 与 test.sh 文件。

en: We need you to add run.sh and test.sh for each new example so that users can run and CI test. If you don't know how to add, please refer to the run.sh and test.sh files of other examples.

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