Link to migration guide

README.md

@@ -1,12 +1,14 @@
+### Deprecated
+
+This library is now in maintenance-mode. We recommend to use [fs2-data-json-circe](https://fs2-data.gnieh.org/documentation/json/libraries/#circe) which provides a [migration guide](https://fs2-data.gnieh.org/documentation/json/libraries/#migrating-from-circe-fs2).
+
 # circe-fs2
 
 [![Build](https://github.com/circe/circe-fs2/workflows/Continuous%20Integration/badge.svg)](https://github.com/circe/circe-fs2/actions)
 [![Coverage status](https://img.shields.io/codecov/c/github/circe/circe-fs2/master.svg)](https://codecov.io/github/circe/circe-fs2)
 [![Gitter](https://img.shields.io/badge/gitter-join%20chat-green.svg)](https://gitter.im/circe/circe)
 [![Maven Central](https://img.shields.io/maven-central/v/io.circe/circe-fs2_2.12.svg)](https://maven-badges.herokuapp.com/maven-central/io.circe/circe-fs2_2.12)
 
-**Deprecated** this library is now in maintenance-mode. We recommend to use [fs2-data-json-circe](https://fs2-data.gnieh.org/documentation/json/libraries/#circe).
-
 This project provides support for using [fs2][fs2] for streaming JSON parsing and decoding with
 [circe][circe], a Scala library for encoding and decoding JSON to Scala types.