sample.yml

development:
    database:
        city: 'Data Source=DWHS;User ID=yahooozi;Password=look-the-other-way;'
        eventservices: you-get-the-idea
        security: this-is-where-setting-values-go
    servers:
        gisserver: someservername
        webserver: yepanothername
production:
    database:
        city: zapperoo 
        eventservices: some-other-string 
        security: some-other-string 
    servers:
        gisserver: servername 
        webserver: servername