Enhance README

README.md

@@ -1,5 +1,8 @@
 # effective_dart
 
+[![pub package](https://img.shields.io/pub/v/effective_dart.svg)](https://pub.dartlang.org/packages/effective_dart)
+[![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+
 This package provides the lints according to the [Effective Dart](https://dart.dev/guides/language/effective-dart) guide.
 
 This package is inspired by the [pedantic](https://github.com/dart-lang/pedantic) package, which contains lints internally used at Google.
@@ -25,6 +28,14 @@ You can always specify a specific version instead:
 include: package:effective_dart/analysis_options.1.0.0.yaml
 ```
 
+## Unused Lints
+
+The following lints have been considered and will not be enforced:
+
+`lines_longer_than_80_chars` might be practical to not follow this rule sometimes for many people.
+
+`unnecessary_getters` has been [disabled](https://github.com/dart-lang/linter/issues/23).
+
 ## License
 
 Licensed under the [MIT License](LICENSE).