add oauth logins

models/User.js

@@ -3,10 +3,14 @@ var bcrypt = require('bcrypt-nodejs');
 var crypto = require('crypto');
 
 var userSchema = new mongoose.Schema({
-  email: { type: String, unique: true, lowercase: true },
+//  email: { type: String, unique: true, lowercase: true },
-  password: String,
+//  password: String,
 
+  linkedin: String,
+  facebook: String,
+  github: String,
   twitter: String,
+  google: String,
   instagram: String,
   tokens: Array,
 

views/account/login.jade

@@ -18,6 +18,21 @@ block content
           | Login
         a.btn.btn-link(href='/forgot') Forgot your password?
       hr
-      a.btn.btn-block.btn-twitter.btn-social(href='/auth/twitter')
+    a.btn.btn-block.btn-facebook.btn-social(href='/auth/facebook')
+        i.fa.fa-facebook
+        | Sign in with Facebook
+    a.btn.btn-block.btn-twitter.btn-social(href='/auth/twitter')
         i.fa.fa-twitter
-        | Sign in with Twitter
+        | Sign in with Twitter
+    a.btn.btn-block.btn-google-plus.btn-social(href='/auth/google')
+        i.fa.fa-google-plus
+        | Sign in with Google
+    a.btn.btn-block.btn-github.btn-social(href='/auth/github')
+        i.fa.fa-github
+        | Sign in with GitHub
+    a.btn.btn-block.btn-linkedin.btn-social(href='/auth/linkedin')
+        i.fa.fa-linkedin
+        | Sign in with LinkedIn
+    a.btn.btn-block.btn-instagram.btn-social(href='/auth/instagram')
+        i.fa.fa-instagram
+        | Sign in with Instagram