Scala Lift: How to move language bundles out of the default resource folder (src/main/resource)

lift_language_bundle.scala

// Default way of loading language bundle in Scala Lift
// Relying on language bundle file(s) to be found in src/main/resources/
// LiftRules.resourceNames = List("languageBundle_en_AU")

val appConfDir = System.getProperty("appConfigDirectory")
LiftRules.resourceBundleFactories.prepend {
  case (key, locale) => {
    val file = new File(appConfDir)
    val urls = Array(file.toURI.toURL)
    val loader = new URLClassLoader(urls)
    ResourceBundle.getBundle("languageBundle_en_AU", locale, loader)
  }
}