Installing TeensDuino on Arduino 2.x

The Arduino 2.0 IDE is very different and installing Teensyduino is a new process. You no longer need to download the Teensyduino, as the Arduino IDE will do that for you. This install process follows a similar process to the ESP32 and ESP8266 boards. Here are the JSON install strings TeensyDuino https://www.pjrc.com/teensy/package_teensy_index.json ESP8266 http://arduino.esp8266.com/stable/package_esp8266com_index.json ESP32 https://dl.espressif.com/dl/package_esp32_index.json,http://arduino.esp8266.com/stable/package_esp8266com_index.json