updated readme

README.md

@@ -14,3 +14,7 @@ Pre-trained glove vectors based on 2B tweets, 27B tokens, 1.2M vocab, uncased.
 Read more:
 - https://nlp.stanford.edu/projects/glove/
 - https://nlp.stanford.edu/pubs/glove.pdf
+
+`glove-twitter-25.db` is a SQLite database which intended to be used with the
+[sqlite-vec](https://github.com/asg017/sqlite-vec) and contains two tables:
+`words` and `embeddings`.