wip on pinger

pinger/build.gradle

@@ -0,0 +1 @@
+mainClassName = 'com.muwire.pinger.Pinger'

pinger/src/main/groovy/com/muwire/pinger/Pinger.groovy

@@ -0,0 +1,7 @@
+package com.muwire.pinger
+
+public class Pinger {
+    public static void main(String []args) {
+        println "ping"
+    }
+}