* chore: Streamlined build.sh
* Merged generate-docs.sh into build.sh
* Split up into smaller functions
* Added serving dependency version to 'kn version' command
Not sure whether the latter is really useful (showing the serving dependency)
as this is might get confused with the knative version
installed on the cluster.
* chore: Fixed indentation
This requires updating test-infra to deal with a repo that has no releases yet.
Also use hash and dates from the helper, to keep the binary and the GCS dirs in sync.
Adriano Cunha