Added content on protocol upgrades#132

Merged

MadelineMurray merged 6 commits into

besu-eth:masterfrom

MadelineMurray:upgradeProtocol

Feb 13, 2020

Commits on Jan 20, 2020

Added default data location
MadelineAu
committed

Commits on Jan 29, 2020

Merge branch 'master' of https://github.com/hyperledger/besu-docs
MadelineAu
committed

Commits on Jan 31, 2020

Commits on Feb 13, 2020