update readme

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XiaochaoGONG 2020-04-01 18:04:23 +08:00
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@ -60,9 +60,9 @@ If you clone project without `--recursive` flag, please go to the `esp-who` dire
### ESP-IDF
See setup guides for detailed instructions to set up the ESP-IDF:
* [Getting Started Guide for the stable ESP-IDF version](https://docs.espressif.com/projects/esp-idf/en/stable/get-started-cmake/index.html)
* [Getting Started Guide for ESP-IDF v4.0](https://docs.espressif.com/projects/esp-idf/en/v4.0/get-started/index.html)
In this case, we take [ESP-IDF v3.3.1](https://github.com/espressif/esp-idf/releases/v3.3.1) as the test version.
In this case, we take [ESP-IDF v4.0](https://github.com/espressif/esp-idf/tree/release/v4.0) as the default version.
If you have already configured ESP-IDF before and don't want to change the existing one, you can just point `IDF_PATH` to the ESP-IDF that is in ESP-WHO.