Cleanup work and make it possible to build

Cleaned up the POM and README. Also ensured that we
take the steps so we can build on Travis CI and deploy
to oss.sonatype.org (maven central) in the future.

https://travis-ci.org/caniszczyk/redfile/builds/4192114

Signed-off-by: Chris Aniszczyk <zx@twitter.com>