Update for kotlin

Android.gitignore

@@ -2,9 +2,6 @@
 .gradle/
 build/
 
-# Kotlin
-.kotlin/
-
 # Local configuration file (sdk path, etc)
 local.properties
 
@@ -34,3 +31,6 @@ google-services.json
 
 # Android Profiling
 *.hprof
+
+# Kotlin Gradle plugin data, see https://kotlinlang.org/docs/whatsnew20.html#new-directory-for-kotlin-data-in-gradle-projects
+.kotlin/