Mainnet Upgrade Tutorial for PCHAIN Node Runners

To all the PCHAIN node runners, please follow the steps below to make sure your node is correctly set-up after a PCHAIN Mainnet upgrade: Run ‘cd ~/pchain ./bin/pchain version’, it will return the latest PCHAIN version running on your node.More details here: https://pchaindoc.readthedocs.io/en/latest/FAQ/node.html#how-to-check-pchain-s-version https://github.com/pchain-org/pchain/releases https://pchaindoc.readthedocs.io/en/latest/FAQ/node.html#how-to-check-if-your-node-is-syncing