added notebook updates
Merge branch 'master' of https://github.com/PaulAYoung/nlp2014_final
updates to nb
Merge branch 'master' of https://github.com/PaulAYoung/nlp2014_final
updated with comments/explanation"

exit()
"
;
Merge branch 'master' of https://github.com/PaulAYoung/nlp2014_final