Добавлены библиотеки для работы с MQTT

libraries/ESPAsyncTCP/README.md

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+# ESPAsyncTCP 
+[![Build Status](https://travis-ci.org/me-no-dev/ESPAsyncTCP.svg?branch=master)](https://travis-ci.org/me-no-dev/ESPAsyncTCP) ![](https://github.com/me-no-dev/ESPAsyncTCP/workflows/ESP%20Async%20TCP%20CI/badge.svg)
+
+### Async TCP Library for ESP8266 Arduino
+
+For ESP32 look [HERE](https://github.com/me-no-dev/AsyncTCP)
+
+[![Join the chat at https://gitter.im/me-no-dev/ESPAsyncWebServer](https://badges.gitter.im/me-no-dev/ESPAsyncWebServer.svg)](https://gitter.im/me-no-dev/ESPAsyncWebServer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+This is a fully asynchronous TCP library, aimed at enabling trouble-free, multi-connection network environment for Espressif's ESP8266 MCUs.
+
+This library is the base for [ESPAsyncWebServer](https://github.com/me-no-dev/ESPAsyncWebServer)
+
+## AsyncClient and AsyncServer
+The base classes on which everything else is built. They expose all possible scenarios, but are really raw and require more skills to use.
+
+## AsyncPrinter
+This class can be used to send data like any other ```Print``` interface (```Serial``` for example).
+The object then can be used outside of the Async callbacks (the loop) and receive asynchronously data using ```onData```. The object can be checked if the underlying ```AsyncClient```is connected, or hook to the ```onDisconnect``` callback.
+
+## AsyncTCPbuffer
+This class is really similar to the ```AsyncPrinter```, but it differs in the fact that it can buffer some of the incoming data.
+
+## SyncClient
+It is exactly what it sounds like. This is a standard, blocking TCP Client, similar to the one included in ```ESP8266WiFi```
+
+## Libraries and projects that use AsyncTCP
+- [ESP Async Web Server](https://github.com/me-no-dev/ESPAsyncWebServer)
+- [Async MQTT client](https://github.com/marvinroger/async-mqtt-client)
+- [arduinoWebSockets](https://github.com/Links2004/arduinoWebSockets)
+- [ESP8266 Smart Home](https://github.com/baruch/esp8266_smart_home)
+- [KBox Firmware](https://github.com/sarfata/kbox-firmware)