Update readme.md

Author: glynhudson

readme.md

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 # OpenEVSE WiFi Gateway v4
 
 > **_NOTE:_** Breaking change! This release reccomends a minimum of [7.1.3](https://github.com/OpenEVSE/open_evse/releases) of the OpenEVSE firmware, features including Solar Divert and push button menus may not behave as expected on older firmware.
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--For the v3 that is compatible with previous EVSE firmwares, see the [v3 branch](https://github.com/OpenEVSE/ESP32_WiFi_V3.x/tree/v3). For the older v2 ESP8266 version (pre June 2020), see the [v2 firmware repository](https://github.com/openevse/ESP8266_WiFi_v2.x/)
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--Instructions on updating the OpenEVSE firmware see [How to Load OpenEVSE Firmware (WinAVR)
--](https://openevse.dozuki.com/Guide/How+to+Load+OpenEVSE+Firmware+(WinAVR)/7?lang=en)
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+- *For the older WiFi V2.x ESP8266 version (pre June 2020), see the [v2 firmware repository](https://github.com/openevse/ESP8266_WiFi_v2.x/)*
 
 
 ![main](docs/main2.png)