Update README.md

Signed-off-by: Simone <hello@simonewebdesign.it>

README.md

@@ -1,22 +1,30 @@
 Android TODO List
 =================
 
+Introduction
+------------
+
+[TODO write an outstanding introduction!]
+[[TODO add Google Play badge here]](https://developer.android.com/distribute/googleplay/publish/preparing.html#badges)
+
 Features
 --------
 
 - ListView of Custom Views (TextView + CheckBox)
+- JSON persistent storage
 
 
 TODO
 ----
 
-- Implementare la gestione delle priorità (massima, minima, oppure numerica)
-- Modifica
-- Cancellazione
-- SQLite Storage
+- [i18n](https://developer.android.com/guide/topics/resources/localization.html)
+- [Prepare promotional graphics, screenshots, and videos for the official launch on Google Play](https://developer.android.com/distribute/googleplay/publish/preparing.html#graphics)
+- [Publish the app on Google Play](https://developer.android.com/distribute/googleplay/publish/preparing.html#graphics)
 
 
 BUGS
 ----
 
-No bugs found... yet.
+No bugs found... yet.
+
+If you find a bug, please open a new issue.