- navigate a console to d3-examples,
- enter python -m SimpleHTTPServer 8888, then
- navigate browser to http://localhost:8888/
http://www.benfrederickson.com/2013/05/09/venn-diagrams-with-d3.js.html
http://www.benfrederickson.com/2013/05/09/venn-diagrams-with-d3.js.html