Easily generate word clouds

The wordcloud package is great but I find the API a bit ceremonious, especially for beginners. Hence this wrapper to make using it easier.

>>> from corpy.vis import wordcloud
>>> import os
>>> wc = wordcloud(os.__doc__)
>>> wc.to_image().show()

In a Jupyter notebook, just inspect the wc variable to display the wordcloud.

For further details, see the docstring of the wordcloud() function.