added sample app for client-server authentication

server2.js

@@ -0,0 +1,37 @@
+var express =       require('express')
+    , http =        require('http')
+    , passport =    require('passport')
+    , path =        require('path')
+    , User =        require('./server/models/User.js');
+
+var app = module.exports = express();
+
+app.set('views', __dirname + '/client/views');
+app.set('view engine', 'jade');
+app.use(express.logger('dev'))
+app.use(express.cookieParser());
+app.use(express.bodyParser());
+app.use(express.methodOverride());
+app.use(express.static(path.join(__dirname, 'client')));
+app.use(express.cookieSession(
+    {
+        secret: process.env.COOKIE_SECRET || "Superdupersecret"
+    }));
+app.use(passport.initialize());
+app.use(passport.session());
+
+passport.use(User.localStrategy);
+passport.use(User.twitterStrategy());  // Comment out this line if you don't want to enable login via Twitter
+passport.use(User.facebookStrategy()); // Comment out this line if you don't want to enable login via Facebook
+passport.use(User.googleStrategy());   // Comment out this line if you don't want to enable login via Google
+passport.use(User.linkedInStrategy()); // Comment out this line if you don't want to enable login via LinkedIn
+
+passport.serializeUser(User.serializeUser);
+passport.deserializeUser(User.deserializeUser);
+
+require('./server/routes.js')(app);
+
+app.set('port', process.env.PORT || 8000);
+http.createServer(app).listen(app.get('port'), function(){
+    console.log("Express server listening on port " + app.get('port'));
+});