update Readme

CHANGELOG.md

+## [1.0.0-nullsafety.0] - 10/02/2021
+* Add nullsafety
+
 ## [0.3.0] - 10/02/2021
 * breaking change capture method returns Uint8List instead of File.
 * support for web and windows

example/lib/main.dart

@@ -50,7 +50,7 @@ class MyHomePage extends StatefulWidget {
 
 class _MyHomePageState extends State<MyHomePage> {
   int _counter = 0;
-  Uint8List? _imageFile;
+  // Uint8List? _imageFile;
 
   //Create an instance of ScreenshotController
   ScreenshotController screenshotController = ScreenshotController();
@@ -90,18 +90,18 @@ class _MyHomePageState extends State<MyHomePage> {
         child: new Center(
           child: Screenshot(
             controller: screenshotController,
-            child: Text("HEllo"),
+            child: Text("You have pushed button $_counter times"),
           ),
         ),
       ),
       floatingActionButton: FloatingActionButton(
         onPressed: () {
           _incrementCounter();
-          _imageFile = null;
+          // _imageFile = null;
           screenshotController
               .capture(delay: Duration(milliseconds: 10))
               .then((Uint8List? image) async {
-            _imageFile = image;
+            // _imageFile = image;
             if (image != null) {
               showDialog(
                 context: context,
@@ -112,7 +112,7 @@ class _MyHomePageState extends State<MyHomePage> {
                   body: Center(
                       child: Column(
                     children: [
-                      if (image != null) Image.memory(image),
+                     Image.memory(image),
                     ],
                   )),
                 ),

example/pubspec.yaml

@@ -8,7 +8,7 @@ description: A new Flutter project.
 # build by specifying --build-name and --build-number, respectively.
 # Read more about versioning at semver.org.
 version: 1.0.0+1
-
+publish_to: none
 environment:
   # sdk: '>=2.8.0 <3.0.0'
   sdk: '>=2.12.0-259.8.beta <3.0.0'

pubspec.yaml

 name: screenshot
 description: Flutter Screenshot Package (Runtime). Capture any Widget as an image.
-version: 0.3.0
+version: 1.0.0-nullsafety.0
 homepage: https://github.com/SachinGanesh/screenshot
 
 environment: