documented automatic translation of messages if angular-translate is present

Author: Marco Rinck

README.md

@@ -9,6 +9,8 @@
 * growl like notifications like in MacOS X
 * using standard bootstrap classes (alert, alert-info, alert-error, alert-success)
 * global or per message configuration of a timeout when message will be automatically closed
+* automatic translation of messages if [angular-translate](https://github.com/PascalPrecht/angular-translate) filter is
+present, you only have to provide keys as messages, angular-translate will translate them
 * pre-defined $http-Interceptor to automatically handle $http responses for server-sent messages
 * < 1 kB after GZIP