Added note https://github.com/Xinyuan-LilyGO/LilyGO-T-ETH-Series/issu… #36

Job	Run time
build (examples/UnitTestExample/UnitTestExample.ino)	1m 3s
build (examples/ETHOTA/ETHOTA.ino)	45s
build (examples/HelloServer/HelloServer.ino)	54s
build (examples/MQTTClient/MQTTClient.ino)	45s
build (examples/ESPMQTTSClient/ESPMQTTSClient.ino)	43s
build (examples/StaticIPAddress/StaticIPAddress.ino)	51s
build (examples/UDPClientReceiver/UDPClientReceiver.ino)	51s
build (examples/UDPClientSender/UDPClientSender.ino)	48s
build (examples/UDPClientReceiverDirectPC/UDPClientReceiverDirectPC.ino)	48s
build (examples/UDPClientSenderDirectPC/UDPClientSenderDirectPC.ino)	48s
build (examples/AsyncUDPServer/AsyncUDPServer.ino)	47s
build (examples/AsyncUDPClient/AsyncUDPClient.ino)	47s
build (examples/WebSocketClient/WebSocketClient.ino)	45s
build (examples/WebSocketServer/WebSocketServer.ino)	45s
build (examples/TCPClient/TCPClient.ino)	41s
build (examples/TCPServer/TCPServer.ino)	51s
build (examples/RS485_Master/RS485_Master.ino)	40s
build (examples/RS485_Slave/RS485_Slave.ino)	34s
build (examples/RS485_ModBUS/RS485_ModBUS.ino)	34s
build (examples/TFT_ILI9341_Shield/TFT_ILI9341_Shield.ino)	47s
build (examples/SPI_Wire_DevicesExample/SPI_Wire_DevicesExample.ino)	50s
build (examples/WireExample/WireExample.ino)	34s
	16m 51s

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