Make PreferencesLink Serializable for Gradle

Author: Horcrux7

src/com/inet/gradle/setup/dmg/PreferencesLink.java

@@ -1,13 +1,15 @@
 package com.inet.gradle.setup.dmg;
 
+import java.io.Serializable;
+
 /**
  * Link for the preferences
  * Takes a title and an action
  * 
  * @author gamma
  *
  */
-public class PreferencesLink {
+public class PreferencesLink implements Serializable {
 
     private String  title;