The map shows the initial San Francisco Bay Area Bike Share stations with blue circles and more recent stations as of 2/28/2014 with map markers. The most recent dataset has not just the city so explore the peninsula!
If this were for a paying person I’d probably try and make the layer selector a little more customized. But this will do for now w/ some pretty vanilla leaflet.js and a custom basemap easily generated on the Mapbox site.