Added a TextLengthBinner class to bin a word count of a body of text. Added a clean_row function to Dataset since the previous approach breaks when we have a non-empty string of text
Merge pull request #1 from samurain/nlp

Added a TextLengthBinner class to bin a word count given a body of text. Added a clean_row function to Dataset since the previous approach breaks when we have a non-empty string of text.