Removed sign up page unless signed in

app/views/devise/registrations/new.html.erb

@@ -1,5 +1,5 @@
 <h2>Sign up</h2>
-
+<% if user_signed_in? %>
 	<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
 	  <%= devise_error_messages! %>
 
@@ -14,5 +14,6 @@
 
 	  <div><%= f.submit "Sign up" %></div>
 	<% end %>
+<% end %>
 
 <%= render "devise/shared/links" %>