Bug CLASSIFICATION_ENDPOINT

[wannaphong]

>>> from monkeylearn import MonkeyLearn
>>> ml = MonkeyLearn('API')
>>> res = ml.classifiers.create('Test Classifier')
>>> module_id = res.result['classifier']['hashed_id']
>>> res = ml.classifiers.detail(module_id)
>>> root_id = res.result['sandbox_categories'][0]['id']
>>> res = ml.classifiers.categories.create(module_id, 'Negative', root_id)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\py34\lib\site-packages\monkeylearn\classification.py", line 20, in ca
tegories
    return Categories(self.token)
  File "C:\py34\lib\site-packages\monkeylearn\classification.py", line 110, in _
_init__
    self.endpoint = CLASSIFICATION_ENDPOINT
NameError: name 'CLASSIFICATION_ENDPOINT' is not defined

I using Python 3.4.3 64 bit for windows. Thank you.

[wannaphong]

fix #6

[rsteca]

Solved, thanks for reporting