pylint cleanup
pylint cleanup

nltk/nltk/twitter/twitter_demo.py:260: [W0311(bad-indentation), ] Bad indentation. Found 12 spaces, expected 8
nltk/nltk/twitter/twitter_demo.py:261: [W0311(bad-indentation), ] Bad indentation. Found 12 spaces, expected 8
nltk/nltk/twitter/twitter_demo.py:262: [W0311(bad-indentation), ] Bad indentation. Found 12 spaces, expected 8
nltk/nltk/twitter/twitter_demo.py:263: [W0311(bad-indentation), ] Bad indentation. Found 12 spaces, expected 8
nltk/nltk/twitter/twitter_demo.py:264: [W0311(bad-indentation), ] Bad indentation. Found 16 spaces, expected 12
nltk/nltk/twitter/twitter_demo.py:265: [W0311(bad-indentation), ] Bad indentation. Found 12 spaces, expected 8

nltk/nltk,nltk/nltk,nltk/nltk