Update README.md

README.md

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 Simplify OIDC authentication for MAUI Blazor app
 
+[![Quality gate](https://sonarcloud.io/api/project_badges/quality_gate?project=Aguafrommars_Maui.Blazor.Authentication)](https://sonarcloud.io/project/overview?id=Aguafrommars_Maui.Blazor.Authentication)  
+
+[![Build status](https://ci.appveyor.com/api/projects/status/sfbc266vmv95kf3l/branch/main?svg=true)](https://ci.appveyor.com/project/aguacongas/maui-blazor-authentication/branch/main)
+
+## Use
+
+Read [`Aguacongas.AspNetCore.Components.Maui.Authentication.Oidc` *Readme.md*](src/Aguacongas.AspNetCore.Components.Maui.Authentication.Oidc/README.md) for information to use the library.
+
+## Build from source
+
+You can build the solution with Visual Studio or use the `dotnet build` command.  
+
+## Contribute
+
+We warmly welcome contributions. You can contribute by opening an issue, suggest new a feature, or submit a pull request.
+
+Read [How to contribute](CONTRIBUTING.md) and [Contributor Covenant Code of Conduct](CODE_OF_CONDUCT.md) for more information.