- clarify problems solved.
Restore accidentally-ish deleted PROTOCOL spec
Do DNS lookups and select a random host.

This fixes a regression entered during the C -> Go port where the dns
randomizer feature was lost.
Rename lumberjack to logstash-forwarder
- recover old lumberjack.sh; rename to logstash-forwarder
- more rename touchups
Actually dns lookup the host, not the host:port. Silly me!
clarify questions asked in #125
- clarify mooooore
Fixed the usage of /etc/default/logstash-forwarder. The previous way did not overwrite the usage of DAEMON_ARGS
Merge pull request #129 from volker-fr/master

Fixed the usage of /etc/default/logstash-forwarder. The previous way did...