Static summary of which systems provide demographic data
bike_demographic_data()
A data.frame detailing the kinds of demographc data provided
by the different systems
bike_demographic_data ()#> city city_name bike_system demographic_data #> 1 bo Boston Hubway TRUE #> 2 ch Chicago Divvy TRUE #> 3 dc Washington DC CapitalBikeShare FALSE #> 4 la Los Angeles Metro FALSE #> 5 lo London Santander FALSE #> 6 ny New York Citibike TRUE