Added an example for part-of-speech tagging.
Added an example for part-of-speech tagging.

ExpResults/partial-crfsuite,prateek05/crfsuite,prateek05/crfsuite,prateek05/crfsuite,dmit25/crfsuite,abicky/crfsuite,prateek05/crfsuite,abicky/crfsuite,abicky/crfsuite,dmit25/crfsuite,ExpResults/partial-crfsuite,Maluuba/crfsuite,abicky/crfsuite,dmit25/crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,prateek05/crfsuite,abicky/crfsuite,abicky/crfsuite,Maluuba/crfsuite,Maluuba/crfsuite,dmit25/crfsuite,Maluuba/crfsuite,Maluuba/crfsuite,ExpResults/partial-crfsuite,Maluuba/crfsuite,prateek05/crfsuite,dmit25/crfsuite,abicky/crfsuite,dmit25/crfsuite,prateek05/crfsuite