Merge pull request #50 from gmaliar/master

Removed code from User model that doesn't belong there

app/models/user.rb

@@ -1,13 +1,4 @@
 class User < ActiveRecord::Base
   attr_accessible :email
   has_many :orders
-  before_validation :generate_uuid!, :on => :create
-  validates_presence_of :uuid
-  self.primary_key = 'uuid'
-  
-  def generate_uuid!
-    begin
-      self.uuid = SecureRandom.hex(16)
-    end while Order.find_by_uuid(self.uuid).present?
-    end
 end