/// Provides convenience accesors to some info dictionary keys
extension Bundle {
    var identifier: String? {
        return string(forInfoDictionaryKey: "CFBundleIdentifier")
    }

    var displayName: String? {
        return string(forInfoDictionaryKey: "CFBundleDisplayName")
    }

    var shortVersionString: String? {
        return string(forInfoDictionaryKey: "CFBundleShortVersionString")
    }

    var version: String? {
        return string(forInfoDictionaryKey: "CFBundleVersion")
    }

    func string(forInfoDictionaryKey key: String) -> String? {
        return object(forInfoDictionaryKey: key) as? String
    }
}