RSpec is now into the whole type based tagging

Update gitignore

ignore .ruby-gemset and .ruby-version

.gitignore

@@ -14,3 +14,5 @@ vendor/bundle
 *.DS_Store
 spec/dummy/log/*
 spec/dummy/db/*.sqlite3
+.ruby-version
+.ruby-gemset

lib/generators/rspec/templates/decorator_spec.rb

@@ -4,6 +4,6 @@
   require 'spec_helper'
 <% end  %>
 
-describe <%= class_name %>Decorator do
+describe <%= class_name %>Decorator, type: :decorator do
   
 end