for child in snapshot.children {
            let bus = Bus()
            let snap = child as! DataSnapshot
            let key = snap.key

            if let coming = snap.childSnapshot(forPath: "coming").value as? Bool {
                bus.coming = coming
            }

            if let gone = snap.childSnapshot(forPath: "gone").value as? Bool {
                bus.gone = gone
            }

            if let here = snap.childSnapshot(forPath: "here").value as? Bool {
                bus.here = here
            }

            if let location = snap.childSnapshot(forPath: "location").value as? String {
                bus.location = location
            }

            if let notes = snap.childSnapshot(forPath: "notes").value as? String {
                bus.notes = notes
            }

            busArray.append(bus)

class Bus: NSObject {
var here: Bool
var gone: Bool
var coming: Bool
var location: String
var notes: String?

override init() {
    self.here = false
    self.gone = false
    self.coming = true
    self.location = ""
    self.notes = ""
}