add honeypot to contact us form

app/views/pages/_contact_form.html.erb

@@ -1,4 +1,6 @@
 <%= form_tag({:controller => 'pages', :action => 'contact_us', :method => :post}, :class => 'form-horizontal') do %>
+  <input name='userlogin' class='userlogin' />
+
   <div class="form-group">
     <label class="col-sm-4 col-xs-3 control-label"><%= t(:email_address).titleize %></label>
     <div class="col-sm-4 col-xs-9"><%= text_field_tag :email, (current_user.present? ? current_user.email : nil), :class => 'form-control' %></div>