README.md in text_injector-0.0.1 vs README.md in text_injector-0.0.2

@@ -19,9 +19,10 @@
     $ gem install text_injector
 
 ## Usage
 
 <pre>
+require 'text_injector'
 injector = TextInjector.new(
   :identifier => "custom-id",
   :file => "/tmp/test.txt",
   :content => "added content"
 )