add gravatar to profile

models/User.js

@@ -1,5 +1,6 @@
 var mongoose = require('mongoose');
 var bcrypt = require('bcrypt-nodejs');
+var crypto = require('crypto');
 
 var userSchema = new mongoose.Schema({
   email: { type: String, unique: true },
@@ -48,4 +49,10 @@ userSchema.methods.comparePassword = function(candidatePassword, cb) {
   });
 };
 
+userSchema.methods.gravatar = function() {
+  var md5 = crypto.createHash('md5');
+  md5.update(this.email);
+  return 'https://gravatar.com/avatar/' + md5.digest('hex').toString() + '?s=200';
+};
+
 module.exports = mongoose.model('User', userSchema);

views/account/profile.jade

@@ -3,8 +3,13 @@ extends ../layout
 block content
   .page-header
     h3 Profile Information
-
   form.form-horizontal(action='/account/profile', method='POST')
+    .row
+      .col-xs-2 
+        img(src="#{user.gravatar()}")
+        small Change your photo at 
+          a(href="http://gravatar.com") Gravatar
+      .col-xs-10
         .form-group
           label.col-xs-2.control-label(for='email') Email
           .col-xs-4