Today I pushed the fourth rerelease of my JavaFX Plugin for Gradle to bintray, version 0.3.0 (real software engineers count from zero). New in this release is the ability to specify a particular JVM to package with your native bundles and the ability to customize platform-specific build options. Some configuration options and conventions also moved around to support these two features, most notably the plugin no longer automatically self-signs the code.
To use the plugin in your gradle script, you can apply the plugin from the following URL:
apply from: "http://dl.bintray.com/content/shemnon/javafx-gradle/0.3.0/javafx.plugin"
Or, you can include the content of that file anywhere in your build, either directly in build.gradle or included from your file path.