Added TCP appender for directly push to a socket.
Issue #28
Merge pull request #37 from mirko1978/master

Added TCP appender for directly push to a socket see Issue #28
Merge pull request #39 from philsttr/master

Use Jackson Streaming API, and add an extensible way to add event-specific fields to json output
Add licenses
Tidy-up
Update contributors
I think the changes are enough for version 3
[maven-release-plugin] prepare release logstash-logback-encoder-3.0
[maven-release-plugin] prepare for next development iteration
Update README.md