Fix sys -> util module rename

Author: benjaminws

examples/stomp-consumer.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-var sys = require('sys');
+var sys = require('util');
 var stomp = require('stomp');
 
 // Set debug to true for more verbose output.

lib/stomp-utils.js

@@ -1,5 +1,5 @@
 var exceptions = require('./stomp-exceptions');
-var sys = require('sys');
+var sys = require('util');
 
 StompLogging = exports.StompLogging = function(should_debug) {
     this.should_debug = should_debug;

lib/stomp.js

@@ -22,7 +22,7 @@
 
 var net = require('net'),
     tls = require('tls'),
-    sys = require('sys'),
+    sys = require('util'),
     frame = require('./frame'),
     stomp_utils = require('./stomp-utils'),
     exceptions = require('./stomp-exceptions'),