title: nativescript rborn nativescript-i18n change language in app
body: <p>I'm using rborn/nativescript-i18n to internationalize my Nativescript App + Angular4.</p>
  
  <p>All is working fine !</p>
  
  <p>I would like to let the user force the language in the app by selecting a language in a select list.</p>
  
  <p>But I don't find how to do that in that lib... may i use another lib ?</p>
  
  <p>Ty.</p>