Changed 'polygon' from multiple query-string inputs to one, semicolon-separated one.
Merge pull request #43 from centzy/polygon-qs

'polygon' in query string
Accepts query-string param 'merchant_appointment_enabled'.  Doesn't use it yet.
Add filtering by merchant_appointment_enabled.
Merge pull request #44 from centzy/filter-merch-appt

Filter by merchant_appointment_enabled