Setup Arduino-ESP32

1. Make sure you are using a Python2 environment in your terminal
2. Install ESP-IDF 3.2.2 (if you have not already)
   1. Check you current version git describe --always --tags --dirty
   2. If in doubt, delete your ESP-IDF folder and fresh install
      git clone -b v3.2.2 --recursive https://github.com/espressif/esp-idf.git
3. Bring ESP-IDF up to the latest Arduino-Compatible commit cd esp-idf && git checkout -b 4a9f339447cd5b3143f90c2422d8e1e1da9da0a4
4. Download this repository git clone --recursive https://github.com/oliverjc/idf-arduino-template.git
5. make menuconfig to configure the project
6. make -j8 to build