Add a helper for creating a reliable MD5 hash from all mods found in the currently loaded instance

src/main/java/com/pahimar/ee3/util/SerializationHelper.java

@@ -0,0 +1,32 @@
+package com.pahimar.ee3.util;
+
+import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.ModContainer;
+import org.apache.commons.codec.digest.DigestUtils;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class SerializationHelper
+{
+    public static String getModListMD5()
+    {
+        List<String> modList = new ArrayList<String>();
+
+        for (ModContainer modContainer : Loader.instance().getModList())
+        {
+            modList.add("[" + modContainer.getModId() + "-" + modContainer.getName() + "-" + modContainer.getVersion() + "]");
+        }
+
+        Collections.sort(modList);
+
+        StringBuilder modListString = new StringBuilder();
+        for (String modEntry : modList)
+        {
+            modListString.append(modEntry);
+        }
+
+        return DigestUtils.md5Hex(modListString.toString());
+    }
+}