Redcarpet as RESTful service

redcarpet-service.rb

require 'sinatra'
require 'redcarpet'

render = Redcarpet::Render::HTML.new \
  filter_html:     true,
  safe_links_only: true
markdown = Redcarpet::Markdown.new render,
  autolink:            true,
  space_after_headers: true,
  tables:              true,
  fenced_code_blocks:  true,
  autolink:            true,
  strikethrough:       true,
  lax_spacing:         true,
  space_after_headers: true,
  superscript:         true

get('/markdown'){'Use POST'}
post '/markdown' do
  data = request.params['data']
  markdown.render data
end

configure do
  set :port, 4000
end