Adding example application implementation and notes

.gitignore

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+node_modules

README.md

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 passportjs-express-example
 ==========================
 
-Passportjs basic working example
+Passportjs basic working example as I felt the docs were too scattered to know how to hit the ground running.
+
+Running the app with your credentials
+-------------------------------------
+
+    TWITTER_CONSUMER_KEY=xxx TWITTER_CONSUMER_SECRET=xxx node app.js

app.js

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+var express = require('express'),
+    app = express(),
+    passport = require('passport'),
+    TwitterStrategy = require('passport-twitter').Strategy;
+
+app.configure(function() {
+    app.use(express.cookieParser());
+    app.use(express.bodyParser());
+    app.use(express.session({ secret: 'keyboard cat' }));
+    app.use(passport.initialize());
+    app.use(passport.session());
+    app.use(app.router);
+
+    app.set('hostname', 'localhost');
+    app.set('port', 4000);
+    app.set('TWITTER_CONSUMER_KEY', process.env.TWITTER_CONSUMER_KEY);
+    app.set('TWITTER_CONSUMER_SECRET', process.env.TWITTER_CONSUMER_SECRET);
+});
+
+passport.use(new TwitterStrategy({
+    consumerKey:    app.get('TWITTER_CONSUMER_KEY'),
+    consumerSecret: app.get('TWITTER_CONSUMER_SECRET'),
+    callbackURL:    'http://' + app.get('hostname') + ':' + app.get('port') + '/auth/twitter/callback'
+    },
+    function(token, tokenSecret, profile, done) {
+        done(null, profile);
+    }
+));
+
+passport.serializeUser(function(user, done) {
+    done(null, user);
+});
+
+passport.deserializeUser(function(user, done) {
+    done(null, user);
+});
+
+app.get('/', function(req, res){
+    if(req.user){
+        res.send(req.user);
+    } else {
+        res.send('<a href="/auth/twitter">Sign in with Twitter</a>');
+    }
+});
+app.get('/auth/twitter', passport.authenticate('twitter'));
+app.get('/auth/twitter/callback', 
+  passport.authenticate('twitter', { successRedirect: '/',
+                                     failureRedirect: '/login' }));
+
+console.log('App running, head to http://' + app.get('hostname') + ':' + app.get('port') + ' to sign in with Twitter');
+app.listen(app.get('port'));

package.json

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+{
+    "name": "passportjs-express-example",
+    "version": "0.0.1",
+    "private": false,
+    "dependencies": {
+        "express": ">=3.0.0rc3",
+        "passport": "*",
+        "passport-twitter": "*"
+    }
+}