     // Drop pin on the map
     private func dropPin(location: Location) {
         if location.latitude != 0 && location.longitude != 0 {
-            var annotation = MKPointAnnotation()
+            let annotation = MKPointAnnotation()
             annotation.coordinate = CLLocationCoordinate2DMake(location.latitude, location.longitude)
             annotation.title = "\(location.latitude),\(location.longitude)"
             annotation.subtitle = location.createdAt.description

    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("CellIdentifier", forIndexPath: indexPath) as! UITableViewCell

        let location = locations[indexPath.row]
        cell.textLabel?.text = "\(location.latitude),\(location.longitude)"


    // MARK: - CLLocationManager delegate

    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        if status == CLAuthorizationStatus.NotDetermined {
            locationManager.requestAlwaysAuthorization()
        }
