Mildly better looking signup page w/ errors.

app/helpers/devise_helper.rb

@@ -0,0 +1,23 @@
+module DeviseHelper
+  # A simple way to show error messages for the current devise resource. If you need
+  # to customize this method, you can either overwrite it in your application helpers or
+  # copy the views to your application.
+  #
+  # This method is intended to stay simple and it is unlikely that we are going to change
+  # it to add more behavior or options.
+  def devise_error_messages!
+    return "" if resource.errors.empty?
+
+    messages = resource.errors.full_messages.map { |msg| content_tag(:p, msg, :class => "alert") }.join
+    sentence = I18n.t("errors.messages.not_saved",
+                      :count => resource.errors.count,
+                      :resource => resource.class.model_name.human.downcase)
+
+    html = <<-HTML
+    <p>#{sentence}</p>
+    #{messages}
+    HTML
+
+    html.html_safe
+  end
+end

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

@@ -1,3 +1,4 @@
+= stylesheet_link_tag "bootstrap_and_overrides", :media => "all"
 %h2 Sign up
 = form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f|
   = devise_error_messages!