Perform a query that returns the Pickup RF for a particular postcode.
PostCode - The Postcode you want to lookup the RF for.
					 CountryCode - The country in which the specified Postcode resides.
					 Suburb - Optional, helps narrow down conflicting postcodes in countries that dont have a very well structured postcode system (eg, AU and NZ)
A data structure. In JSON, it looks like:
{
    result: {
        franchise_code: 'SYD'
        franchise_name: 'Sydney'
        franchise_email: 'sydney@fastway.org'
        franchise_country: 'Australia'
    }
}
    Lookup the RF for postcode '2155' in country '1':
				https://api.fastway.org/v7/psc/pickuprf/2155/1?api_key=YOUR_API_KEY