add middleman-haml-heroku to templates
add middleman-haml-heroku to templates

krautcomputing/middleman-directory,pzi/middleman-directory,pzi/middleman-directory,natbatwat/middleman-directory,middleman/middleman-directory,krautcomputing/middleman-directory,krautcomputing/middleman-directory,dhulihan/middleman-directory,natbatwat/middleman-directory,dhulihan/middleman-directory,middleman/middleman-directory,middleman/middleman-directory,natbatwat/middleman-directory,pzi/middleman-directory,dhulihan/middleman-directory