Clarify postgres URL issue in readme
Clarify postgres URL issue in readme

codeforamerica/cityvoice,ajb/cityvoice,codeforamerica/cityvoice,codeforgso/cityvoice,codeforgso/cityvoice,ajb/cityvoice,codeforamerica/cityvoice,codeforamerica/cityvoice,ajb/cityvoice,daguar/cityvoice,codeforgso/cityvoice,codeforgso/cityvoice,daguar/cityvoice,daguar/cityvoice,ajb/cityvoice,daguar/cityvoice