update deps

package.json

@@ -15,13 +15,10 @@
   },
   "author": "fent (https://github.com/fent)",
   "main": "./server.js",
-  "engines": {
-    "node": ">=0.8.0"
-  },
   "dependencies": {
-    "express": "2.5.x",
-    "socket.io": "0.8.x",
-    "socket.io-clusterhub": "0.2.x"
+    "express": "~2.5.11",
+    "socket.io": "~0.9.16",
+    "socket.io-clusterhub": "~0.2.0"
   },
   "licenses": [
     {
@@ -31,6 +28,6 @@
   ],
   "private": true,
   "scripts": {
-    "start": "server.js"
+    "start": "node server.js"
   }
 }