@kgriffin Or if you need latest language features you can use
https://bintray.com/kotlin/kotlin-eap-1.1/kotlin
With EAP plugin version
Or... use OSS Sonatype Snapshots repository for nightly builds of kotlin and kotlin-gradle-plugin
<https://oss.sonatype.org/content/repositories/snapshots/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1-SNAPSHOT/>