Made fortune cookie module. and applied it!

+/**
+ * 모듈 만들기
+ */
+var fortunes = [
+    "Conquer your fears or they will conquer you.",
+    "Rivers need springs.",
+    "Do not fear what you don't know.",
+    "You will have a pleasant surprise.",
+    "Whenever possible, keep it simple.",
+];
+//전역변수 추가. 모듈 밖에서도 사용할 수 있게.
+exports.getFortune = function() {
+    var idx = Math.floor(Math.random() * fortunes.length);
+    return fortunes[idx];
+}

 var express = require('express');
+//require : 모듈 가져오는 함수
+//include 와 비슷한 느낌이군.
+//기본적으로 node_modules 디렉토리에서 찾는다
+// ./를 붙이면 거기서 찾지 않는다.
+var fortune = require('./lib/fortune.js');
 
-var fortunes = [
-    "Conquer your fears or they will conquer you.",
-    "Rivers need springs.",
-    "Do not fear what you don't know.",
-    "You will have a pleasant surprise.",
-    "Whenever possible, keep it simple.",
-];
 
 var app = express();
 app.use(express.static(__dirname + '/public'));
@@ -21,8 +19,8 @@ app.get('/', function (req, res) {
     res.render('home');
 });
 app.get('/about', function (req, res) {
-    var randomFortune = fortunes[Math.floor(Math.random() * fortunes.length)];
-    res.render('about', { fortune : randomFortune});
+ //   var randomFortune = fortunes[Math.floor(Math.random() * fortunes.length)];
+    res.render('about', { fortune : fortune.getFortune()});
 });
 
 //404 Page