Update README.md

Author: asm0dey

README.md

@@ -5,6 +5,8 @@ Your next API to work with  [Spark](https://spark.apache.org/).
 
 We are looking to have this as a part of https://github.com/apache/spark repository. Consider this beta-quality software.
 
+Nice-looking rendered [README](https://jetbrains.github.io/kotlin-spark-api/)
+
 ## Goal
 
 This project adds a missing layer of compatibility between [Kotlin](https://kotlinlang.org/) and [Spark](https://spark.apache.org/).