Shakespeare sample application for DataStax Python driver

1. Let the environment finish running the pip install command.	See terminal below
2. Get an Astra account/database at https://astra.datastax.com
3. Get your DB ID and Token
4. Sign up at openai.com and get an API key	http://openai.com
5. Populate an .env file in the Chapter3 directory with the items from the previous steps.	OPENAI_API_KEY= ASTRA_DB_APPLICATION_TOKEN= ASTRA_DB_ID=
6. Change directories to Chapter3, then run the population command with `python populate.py` to get the answer	cd Chapter3 python populate.py
7. Change directories to Chapter4, then run the split command with `python split.py` to separate the training and testing data.	cd ../Chapter4 python split.py