Merge pull request #2 from JackSullivan/master

Several updates to concrete-factorie
Debug method makeConstituent by commented addAllChildren and remove
implicit argument uuid.
ignore .cache in git.
Merge branch 'master' of https://github.com/hltcoe/concrete-factorie

Conflicts:
	src/main/scala/edu/jhu/hlt/concrete/converters/factorie/ImplicitConversions.scala