* Changed reference to Caddy over to CoreDNS
* Removing references to caddy
* Fixed misleading error message to reference coredns
* Cleaning up references to caddy
* Adding clean and deps targets
Muscle memory is resulting in "make clean" commands.
* Adding test target to makefile
* More "Caddy" cleanup
Fix some file/secondary issues when parsing a Corefile, also allow
for multiple origins to be specified. Also don't fail on startup when
a zonetransfer fails.
Fixes: #54
