Provider support for overlay easy to build toast and internal notification

overlay easy support

provider support for overlay easy to build toast and internal notification.

how to use

1. add dependencies into you project pubspec.yaml file

dependencies:
  overlay_support: ^0.0.1

2. import package into your dart file

import 'package:overlay_support/overlay_support.dart';

3. use showsimplenotification method to show a notification at top of screen

showsimplenotification(context,
    text("this is a message from simple notification"),
    background: colors.green);