Trying to figure out a simple coref solution using stanford pipeline, testing with class PhilipKaiser.scala
More testing on PhilipKaiser
Changed DateUtils to DocUTils and added a method for getting a list of CorefMentions
Merge branch 'master' into corefUtils

Conflicts:
	slotfiller/src/main/scala/edu/knowitall/tac2013/app/FilterSolrResults.scala
Changed import to DocUtils
Added argument length exception for main class in DocUtils.scala
Changed the checker on the tokens to only match beginning offset
fixed null exception bug
Merge pull request #64 from jgilme1/corefUtils

Coref utils