- measures.R:
  * Added relationAmbiguity, relationSimilarity, sentenceClarity, Sentence-Relation score
  * Modified cosine measure (return cos(x) instead of 1 - cos(x))
  * Corrected bug: returning cosine and agreement sorted by worker_id (previously unsorted).

- simplify.R
  * Added createSentenceVector, getRelationVector functions.
  * Added getRelationCoOccur (for relationSimilarity)

- fileStorage.R:
  * Writing the new measures (relSimilarity, sentClarity, etc.) to the spreadsheet
Merge branch 'master' of https://github.com/laroyo/watsonc