What! What?

The docs for instrumenting your Sinatra app with New Relic on Heroku are either wrong or a bit sparse. Its actually very simple.

1. Add the newrelic_rpm gem to either your .gems or Gemfile
2. require the rpm library when in production

   configure :production do
   	require 'newrelic_rpm'
   end

3. add the heroku new_relic addon

   heroku addons:add newrelic:bronze

A full working example is here!