Wrapper around NSLocalizableString to make it a lot easier to use

String+Localization.swift

extension String {
    /// Loads the localized version of the current string
    @inline(__always)
    func localized(comment: String = "") -> String {
        return NSLocalizedString(self, comment: "")
    }

    /// Loads the localized version of the current string, interpolating the provided values into the string
    func localized(comment: String = "", _ args: CVarArg...) -> String {
        return withVaList(args) {
            NSString(format: localized(comment: comment), arguments: $0) as String
        }
    }
}