Begin restructuring using Griffon

griffon-app/controllers/com/jdbernard/timestamper/TimeStamperMainController.groovy

@@ -0,0 +1,16 @@
+package com.jdbernard.timestamper
+
+class TimeStamperMainController {
+    // these will be injected by Griffon
+    def model
+    def view
+
+    void mvcGroupInit(Map args) {
+        // this method is called after model and view are injected
+    }
+
+    /*
+    def action = { evt = null ->
+    }
+    */
+}