Add tag helper (gregschmit#157)

* Update recurring_select_helper.rb

* Update engine.rb

Author: afstanton

lib/helpers/recurring_select_helper.rb

@@ -6,6 +6,12 @@ def select_recurring(object, method, default_schedules = nil, options = {}, html
       RecurringSelectTag.new(object, method, self, default_schedules, options, html_options).render
     end
   end
+  
+  module FormTagHelper
+    def select_recurring_tag(name, default_schedules = nil, options = {}, html_options = {})
+      RecurringSelectTag.new(nil, name, self, default_schedules, options, html_options).render
+    end
+  end
 
   module FormBuilder
     def select_recurring(method, default_schedules = nil, options = {}, html_options = {})

lib/recurring_select/engine.rb

@@ -6,6 +6,7 @@ class Engine < Rails::Engine
 
     initializer "recurring_select.extending_form_builder" do |app|
       ActionView::Helpers::FormHelper.send(:include, RecurringSelectHelper::FormHelper)
+      ActionView::Helpers::FormTagHelper.send(:include, RecurringSelectHelper::FormTagHelper)
       ActionView::Helpers::FormOptionsHelper.send(:include, RecurringSelectHelper::FormOptionsHelper)
       ActionView::Helpers::FormBuilder.send(:include, RecurringSelectHelper::FormBuilder)
     end