Fixes #53 fixes #43

Due to changes to the Facebook API, the user's Facebook name and
e-mail address return as undefined undefined, and undefined respectively.
This PR addresses these issues, hopefully successfully fixing them.

Changes made:
1. In auth.js: under Facebook, 'profileFields' was added for requesting
permissions from the FB API.
2. In routes.js: 'public_profile' was added to the FB permissions scope.
Although FB provides this by default to an app that was granted access by
a user, it is considered best practice to declare all requested permissions.
3. In user.js: under facebook, name was changed to be before email field.
Their order is the reason behind issue #43, where email id returns as undefined.

Author: Fatima A. Alansari

app/models/user.js

@@ -12,8 +12,8 @@ var userSchema = mongoose.Schema({
     facebook         : {
         id           : String,
         token        : String,
-        email        : String,
-        name         : String
+        name         : String,
+        email        : String
     },
     twitter          : {
         id           : String,

app/routes.js

@@ -54,7 +54,7 @@ module.exports = function(app, passport) {
     // facebook -------------------------------
 
         // send to facebook to do the authentication
-        app.get('/auth/facebook', passport.authenticate('facebook', { scope : 'email' }));
+        app.get('/auth/facebook', passport.authenticate('facebook', { scope : ['public_profile', 'email'] }));
 
         // handle the callback after facebook has authenticated the user
         app.get('/auth/facebook/callback',
@@ -105,7 +105,7 @@ module.exports = function(app, passport) {
     // facebook -------------------------------
 
         // send to facebook to do the authentication
-        app.get('/connect/facebook', passport.authorize('facebook', { scope : 'email' }));
+        app.get('/connect/facebook', passport.authorize('facebook', { scope : ['public_profile', 'email'] }));
 
         // handle the callback after facebook has authorized the user
         app.get('/connect/facebook/callback',

config/auth.js

@@ -7,7 +7,8 @@ module.exports = {
         'clientID'        : 'your-secret-clientID-here', // your App ID
         'clientSecret'    : 'your-client-secret-here', // your App Secret
         'callbackURL'     : 'http://localhost:8080/auth/facebook/callback',
-        'profileURL': 'https://graph.facebook.com/v2.5/me?fields=first_name,last_name,email'
+        'profileURL': 'https://graph.facebook.com/v2.5/me?fields=first_name,last_name,email',
+        'profileFields'   : ['id', 'email', 'name'] // For requesting permissions from Facebook API
 
     },