This app uses word frequencies from the Google Ngram Viewer dataset
compilation, for the random word selection.  This is used in the "Random
word" and "Word of the day" features.

The dataset compilation is here:
http://storage.googleapis.com/books/ngrams/books/datasetsv2.html

The processing of the dataset is described here:
https://github.com/caarmen/text-processing

The Google Ngram compilation is licensed under the Creative Commons
Attribution 3.0 Unported License. To view a copy of this license, visit
http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative
Commons, PO Box 1866, Mountain View, CA 94042, USA.

