README.md in opencensus-0.2.2 vs README.md in opencensus-0.3.0

- old
+ new

@@ -75,13 +75,14 @@
 tracking the latency of that request, and propagates distributed trace headers
 into the request so you can potentially connect your request trace with that of
 the remote service. Here is an example:
 
 ```ruby
+require "opencensus/trace/integrations/rack_middleware"
 conn = Faraday.new(url: "http://www.example.com") do |c|
   c.use OpenCensus::Trace::Integrations::FaradayMiddleware
   c.adapter Faraday.default_adapter
-  end
+end
 conn.get "/"
 ```
 
 See the documentation for the
 [FaradayMiddleware](http://www.rubydoc.info/gems/opencensus/OpenCensus/Trace/Integrations/FaradayMiddleware)