SCORE-78. Prepares KijiScoring for BentoBox.

Tidies up pom.xml, removing unnecessary dependencies.
Fixes newlines in FreshTool.
Updates README.md.

Reviewed-by: Aaron Feldstein
SCORE-75. Reimplements FreshKijiTableReader with improved concurrency

issue: https://jira.kiji.org/browse/SCORE-75