Issue #2308747 by torpy: Added support for Australian English.

open_readspeaker.admin.inc

@@ -14,6 +14,7 @@ function open_readspeaker_config($form, &$form_state) {
     'none'  => t('Select a language'),
     'en_us' => t('English (US) - English'),
     'en_uk' => t('English (British) - English'),
+    'en_au' => t('English (Australia) - English'),
     'ar_ar' => t('@arabic - Arabic', array('@arabic' => urldecode('%D8%B9%D8%B1%D8%A8%D9%8A'))),
     'es_eu' => t('Euskara - Basque'),
     'ca_es' => t('Català - Catalan'),