Chunk implementation functional, but not feature-complete.
Further extended feature set

Addded first & second / third person pronoun ratio, pronoun it ratio,
total NE ratio, NE ratio sans date, verb base / past tense / gerund /
past participle / non 3rd person singular present / third person
singular present
Added noun/verb chunks, and updated instance attribute names
Merge pull request #1 from jessestuart/chunk

Chunk