#4 - added instructions for using the Github gem in a Rails 2.1 project

README.textile

@@ -12,6 +12,13 @@ Github: "Page":http://github.com/thoughtbot/factory_girl/tree/master "Clone":git
 
 Gem: <pre>gem install thoughtbot-factory_girl --source http://gems.github.com</pre>
 
+Note: if you install factory_girl using the gem from Github, you'll need this
+in your environment.rb if you want to use Rails 2.1's dependency manager:
+
+config.gem "thoughtbot-factory_girl",
+           :lib    => "factory_girl",
+           :source => "http://gems.github.com"
+
 h2. Defining factories
 
 <pre><code># This will guess the User class