Comment on cloning the repository

[Quackmore]

nodemcu/nodemcu-firmware repository now includes submodules (which is fine)

so pulling down a full copy of all the repository data now requires

git clone --recurse-submodules

ya, I know, it's trivial but pointing it out hopefully will save some time to someone else

PS:
love yor job!

[Marcel Stör]

https://nodemcu.readthedocs.io/en/latest/build/#git