Add kijischema DEVEL userguide.
Add KijiSchema development API docs link.
Add KijiMR DEVEL userguide.
Add development phonebook tutorial.
Add music recommendation development version.
Add documentation release script.

To release new versions of documentation from the DEVEL editions,
you should edit the environment variables in the top of scripts/release_docs.sh
and run it from the root of the project.
whitespace.