Merged opennlp_download.patch
Nuked data directory, now handled in maven.
Responded to all comments but one on reviewboard: https://reviews.apache.org/r/17074/
Extracted getFileName to CachedFile class.
removed unneeded instance variables.
Incorporated feedback from 2nd reviewboard review.
Put model data path names in javadoc
Merge branch 'master' of github.com:rjurney/datafu into tojson
In progress work, no idea, need to move branches.