Include Mercurius in installer. See Forge Forums for more info.

jsons/1.10.2-rel.json

@@ -135,5 +135,18 @@
       "serverreq":true
     }
   ]
-}
+},
+"optionals": [
+    {
+        "name": "Mercurius",
+        "client": true,
+        "server": true,
+        "default": true,
+        "inject": true,
+        "desc": "A mod that collects statistics about Minecraft and your system.<br>Useful for Forge to understand how Minecraft/Forge are used.",
+        "url": "http://www.minecraftforge.net/forum/index.php?topic=43278.0",
+        "artifact": "net.minecraftforge:MercuriusUpdater:1.10.2",
+        "maven": "http://files.minecraftforge.net/maven/"
+    }
+]
 }