In practice there are cases when fx.Replace doesn't work as expected,
so this updates the documentation to recommend using fx.Decorate
instead which is a bit easier to use.
For now, configs specified in `daemon --init-config` and `init CONFIG` are not
available. We should fix this eventually but isn't necessary for now (and
supporting this will be annoying).
* Flesh out build documentation.
* Add datastore plugins to plugin list.
* Link to example plugin.
* Add a TOC.
License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>