added node latency

lib/node.js

@@ -5,12 +5,13 @@ var shelljs = require('shelljs');
 
 var Primus = require('primus'),
 	Emitter = require('primus-emit'),
+	Latency = require('primus-spark-latency'),
 	Socket;
 
 Socket = Primus.createSocket({
 	transformer: 'websockets',
 	pathname: '/api',
-	plugin: {emitter: Emitter}
+	plugin: {emitter: Emitter, sparkLatency: Latency}
 });
 
 var INSTANCE_NAME,

package.json

@@ -13,6 +13,7 @@
     "lodash": "^3.2.0",
     "primus": "^2.4.12",
     "primus-emit": "^0.1.2",
+    "primus-spark-latency": "^0.1.1",
     "shelljs": "^0.3.0",
     "ws": "^0.7.1"
   },