Format for tsv file for new vocab

I'm trying to train the model using my own data.
In the examples directory, it says to run: `create_twitter_vocab.py`
This script tries to open this file: `../../twitterdata/tweets.2016-09-01
`
But there is not such file in repo. Can you please help me understand what is the format of this data file? I understand this is a tsv but what are the contents of this file?

Start by reading examples/create_twitter_vocab.py and check how it opens ../../twitterdata/tweets.2016-09-01. Document the expected TSV contents and explain where the data file should come from, so someone training with their own data can prepare the file and run the script successfully.

Written by the indexing model from the issue text.