kiji-scoring: SCORE-116. Update org.kiji.scoring package-info.java

issue: https://jira.kiji.org/browse/SCORE-116
review: https://review.kiji.org/r/1221
commit: https://github.com/kijiproject/kiji-scoring/commit/54bf3d33386ef9fa431a1e034699aadbcd4c2d97