Add instructions to have people update distribution history on release.

[edegenetais-nx]

Distribution history

This ecosystem uses many independant components, some of which live an independant life in distinct repositories.
For each release of psc-ps-api, the psc-compoents' distribution history file will need to be updated with the new version, so that we can keep track of compatible component versions, and go back to a previous working distribution if need be.