Uitlity

Utility is a class containing static methods like:
1. save SharedPrefrenc(String key, String value,
			Context context).
2.  show Toast(Context context, String toast)
3.  check isOnLIne(context context)
4. showPopUP(tring title, String message,
			Context context)
5 isEmailValid(String email)
6. showDialog(Context context)
7. dismissDialog()