Added scripts/unknownPOSLabeler.py which reads through the tagged files,
looks for "UNKNOWN" tags, and labels them as either a proper noun or a
transitive verb (based upon whether the words is in BoMProperNouns.txt
or not--all words not there are assumed to be transitive verbs).  The
word is then tagged accordingly and appended to the end of the file.
Added unknownPOSLabeler to the repo
Updated list of proper nouns