Example code return error on download_page method

[MindaugasVaitkus2]

Example code return error on download_page method. See code error from cmd below>

>>> import webb
>>>
>>> page = webb.download_page("http://www.zseries.in")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'download_page'
>>> print(page)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'page' is not defined
>>> clean_page = webb.clean_html_tags(page)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'clean_html_tags'
>>> print('Clean Page: '+ clean_page)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'clean_page' is not defined