gaelyk plugin system (use of quandl4j)

Question

I have wondered how it would be possible to use gaelyk plugin system for quand4j which is a library on top of quandl (open data system). After many attempts of adding manually to build.gradle like the excerpt hereunder without any success, could someone point me at good reference for plugins in gaelyk (both gradle and plugins.groovy)?

apply plugin: 'war'
apply plugin: 'gaelyk'
apply plugin: 'appengine-geb'

def compatibilityVersion = 1.7
sourceCompatibility = compatibilityVersion
targetCompatibility = compatibilityVersion

repositories {
    mavenCentral()
    jcenter()
    maven {
        url "http://maven.opengamma.com/nexus/content/groups/public/"
    }
}

dependencies {
    def gaeVersion = '1.9.4'
    def groovyVersion = '2.3.0'
    ...
    compile 'com.jimmoores:quandl:0.8.1'   
}