Bundle extensions in swift

BundleExtension.swift

import Foundation

extension Bundle {
    var appName: String? {
        return Bundle.main.infoDictionary?["CFBundleName"] as? String
    }
    var appVersion: String? {
        return Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
    }
    var bundleVersion: String? {
        return Bundle.main.infoDictionary?["CFBundleVersion"] as? String
    }
}