Swift NSURL extension to turn the query into a dictionary

NSURL+QueryDictionary.swift

extension NSURL {
    var queryDictionary: [String: String] {
        guard let components = NSURLComponents(string: absoluteString), items = components.queryItems else { return [:] }

        return items.reduce([:]) { dictionary, item in
            var dictionary = dictionary
            dictionary[item.name] = item.value
            return dictionary
        }
    }
}