This pull request Closes #41 by adding a Gravizo reference to the DataHub README.md as below ...
Markdown
4. This project uses [Gravizo](https://g.gravizo.com) for all diagrams and charts as highlighted in [DataHub Issue 41](https://github.com/finos/datahub/issues/41).
Description
This pull request Closes #41 by adding a Gravizo reference to the DataHub README.md as below ...
Markdown
Addition