docs: Inform about JaCoCo alternative as solution

This change adds information about using the latest JaCoCo version
instead to solve the issue of code coverage as this does not pollute the
resulting bytecode with Lombok annotations.

Author: fabianishere

README.md

@@ -2,6 +2,24 @@
 A Kotlin compiler plugin that annotates Kotlin-generated methods with `lombok.Generated` to signify to code analyzers
 that these methods have been generated by the compiler.
 
+## JaCoCo solution (new)
+Please note that JaCoCo recently landed support for recognizing Kotlin-generated
+code, so we suggest using one of their snapshots builds (0.8.2-SNAPSHOT+) instead if possible.
+It has the advantage of not polluting your code with `lombok.Generated` annotations.
+
+In Gradle, you can do that as follows:
+
+```groovy
+repositories {
+    // This repository is needed to get the latest snapshot of JaCoCo
+    maven { url = "https://oss.sonatype.org/content/repositories/snapshots" }
+}
+
+jacoco {
+     toolVersion = '0.8.2-SNAPSHOT'
+}
+```
+
 ## Gradle
 To use the plugin, just apply the plugin in your `build.gradle`: