README.md in cassette-rack-0.5.0 vs README.md in cassette-rack-0.6.0

@@ -25,10 +25,17 @@
 ## Usage
 
 Add this line to your `config.ru`:
 
 ```
+require 'cassette-rack'
 run CassetteRack::Engine
+```
+
+And then execute:
+
+```
+$ rackup
 ```
 
 ## License
 
 * MIT