Autoscaler concurrency annotations are added to the revision template if
--min-scale / --max-scale / --concurrency-target/--concurrency-limit
are provided to `kn service create` and `kn service update`
Fixes#151
Also:
1. New docs for commands
* service get
* revision get
2. Removes auto generated docs tags
3. Auto run generated docs when building to pick up any command changes