Examples from ESPAsyncTCP and update to Readme

[haddow777]

Hello. I really like this library. I was thoroughly frustrated with the ESP32 version of the Arduino WiFi library to handle TCP connections. Someone referred me to here. Unfortunately, I'm not super great with C and was stuck for quite a bit trying to understand how this library functioned just from the code.
Recently I was made aware that example code is present in the ESPAsyncTCP repository, which is basically the same as this one with more functionality. I looked at the client server example and they appear to only use the ESPAsyncTCP files, which are as far as I know exactly the same as the ones in this repository except these ones have code specific to the ESP32's underpinnings.
Could it be possible to have those examples copied over to here so those looking for ESP32 TCP functionality can find them more easily? If they aren't drop in capable, maybe just a reference to the fact tht the ESPAsyncTCP library has them so new people can know that a nearly identical library has something that can be used as a guide? Could save people time and frustration.
Thanks.

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