README.md in barnes-0.0.7 vs README.md in barnes-0.0.8

@@ -2,13 +2,13 @@
 
 A fork of [trashed](https://github.com/basecamp/trashed) focused on Ruby metrics for Heroku.
 
 ## Setup
 
-### Rails 5
+### Rails 3, 4, 5, and 6
 
-On Rails 5 (and Rails 3 and 4), add this to your Gemfile:
+On Rails 6 (and Rails 3 and 4 and 5), add this to your Gemfile:
 
 ```
 gem "barnes"
 ```
 
@@ -30,18 +30,21 @@
 
 ```
 $ bundle install
 ```
 
-In your application:
+In your puma.rb file:
 
 
 ```ruby
 require 'barnes'
 ```
 
 Then you'll need to start the client with default values:
 
 ```ruby
-Barnes.start
+before_fork do
+  # worker configuration
+  Barnes.start
+end
 ```