Put together a demo dataset for Washington, DC

[jayqi]

Currently our demo dataset is Three Rivers, Michigan. It turns out that DC has very thorough coverage on Mapillary thanks to the DC Department of Transportation!

Since a lot of the contributors to the project are from Civic Tech DC, it would be nice to have DC demo data. This would involve:

• [ ] Pulling some road features from Open Street Map (in some vector format like gpkg)
• [ ] Making sure it runs through the pipeline successfully
• [ ] Uploading it to the project Google Drive and making it public
• [ ] Updating the README to link to and mention it

[LeviImbuzan]

I can take this one on

[danbjoseph]

Hi @LeviImbuzan are you still working on this?