Update README.md

README.md

@@ -1,11 +1,66 @@
-
 # ZXing.Net.MAUI
-The successor to ZXing.Net.Mobile
 
-![zxing net maui](https://user-images.githubusercontent.com/271950/129272315-b3f5a468-c585-49f2-bbab-68a884618b94.png)
+The successor to ZXing.Net.Mobile: barcode scanning and generation for .NET MAUI applications
+
+<img src="https://user-images.githubusercontent.com/271950/129272315-b3f5a468-c585-49f2-bbab-68a884618b94.png" width="300" />
 
 ## Barcode Scanning
 
+### Install ZXing.Net.MAUI
+
+1. Install [ZXing.Net.MAUI](https://www.nuget.org/packages/ZXing.Net.Maui) NuGet package on your .NET MAUI application
+
+1. Make sure to initialize the plugin first in your `MauiProgram.cs`, see below
+
+    ```csharp
+    // Add the using to the top
+    using ZXing.Net.Maui;
+
+    // ... other code 
+
+    public static MauiApp Create()
+    {
+    	var builder = MauiApp.CreateBuilder();
+
+    	builder
+    		.UseMauiApp<App>()
+    		.UseBarcodeReader(); // Make sure to add this line
+
+    	return builder.Build();
+    }
+    ```
+
+Now we just need to add the right permissions to our app metadata. Find below how to do that for each platform.
+
+#### Android
+
+For Android go to your `AndroidManifest.xml` file (under the Platforms\Android folder) and add the following permissions inside of the `manifest` node:
+
+```xml
+<uses-permission android:name="android.permission.CAMERA" />
+```
+
+#### iOS
+
+For iOS go to your `info.plist` file (under the Platforms\iOS folder) and add the following permissions inside of the `dict` node:
+
+```xml
+<key>NSCameraUsageDescription</key>
+<string>This app uses barcode scanning to...</string>
+```
+
+Make sure that you enter a clear and valid reason for your app to access the camera. This description will be shown to the user.
+
+#### Windows
+
+Windows is not supported at this time for barcode scanning. You can however use the barcode generation. No extra permissions are required for that.
+
+For more information on permissions, see the [Microsoft Docs](https://docs.microsoft.com/dotnet/maui/platform-integration/appmodel/permissions).
+
+### Using ZXing.Net.Maui
+
+If you're using the controls from XAML, make sure to add the right XML namespace in the root of your file, e.g: `xmlns:zxing="clr-namespace:ZXing.Net.Maui.Controls;assembly=ZXing.Net.MAUI"`
+
 ```xaml
 <zxing:CameraBarcodeReaderView
   x:Name="cameraBarcodeReaderView"