Add scala, kotlin and groovy section, for now without any description

Runtime-Environments.md

@@ -57,4 +57,16 @@ requires the `$HOME` variable to be set to something. Otherwise, it tries to
 look up the UID used by Isolate in `/etc/passwd` and fails. Setting `HOME=/box` 
 seems to work.
 
-Python is currently installed with pip packages for TensorFlow support, so it can be used as an environment for deep learning assignments. This may change in the future.
+Python is currently installed with pip packages for TensorFlow support, so it can be used as an environment for deep learning assignments. This may change in the future.
+
+## Scala
+
+TODO
+
+## Groovy
+
+TODO
+
+# Kotlin
+
+TODO