Use console.log() instead of util.puts()

Since NodeJS v0.11.3, util.puts becomes deprecated API.

Author: nishidayuya

example/demo.js

@@ -1,14 +1,13 @@
-var sys = require('util');
 var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
 
 var xhr = new XMLHttpRequest();
 
 xhr.onreadystatechange = function() {
-	sys.puts("State: " + this.readyState);
+	console.log("State: " + this.readyState);
 
 	if (this.readyState === 4) {
-		sys.puts("Complete.\nBody length: " + this.responseText.length);
-		sys.puts("Body:\n" + this.responseText);
+		console.log("Complete.\nBody length: " + this.responseText.length);
+		console.log("Body:\n" + this.responseText);
 	}
 };