Fix the error handling. Log when we have an error during any of the
transfer state. And if there isn't an error transfer the zones.
Also fix the tests in test/ so we, at least, check the initial transfer.
Update the docs to show more about how errors are handled.
Ref #1400
* Add manual pages
Generate manual pages from the README and extend README with Name and
Description sections.
The generation requires 'ronn' which may not be available. Just check in
all generated manual pages.
* Rename middleware to plugin
first pass; mostly used 'sed', few spots where I manually changed
text.
This still builds a coredns binary.
* fmt error
* Rename AddMiddleware to AddPlugin
* Readd AddMiddleware to remain backwards compat
