(Quick Reference)
                package-plugin
Purpose
Packages a plugin as a ZIP archive which can then be installed into another application
Examples
Description
Usage:
Fired Events:
- StatusError- When there was an error during packaging
The plugin archive will be named with the convention 
grails-[name]-[version].zip. The name and version are obtained from the plugin descriptor (the Groovy class ending with the convention 
GrailsPlugin.groovy) in the root of the plugin directory. For example this plugin:
class SimpleGrailsPlugin {
    def version = "0.1"
}will result in a ZIP archive called 
grails-simple-0.1.zip, which can then be installed into an application with the 
install-plugin command.