Update documentation

index.html

@@ -64,10 +64,10 @@ <h2>Configure</h2>
   <h2>Usage</h2>
   <p>
   We aim to expose MiniTest with minimal changes for testing within Rails.
-  You can either create test classes that inherit from
-  MiniTest::Unit::TestCase or you can use the MiniTest::Spec DSL. You can
-  generate tests when you use the standard model, controller, scaffold, and
-  other generators:
+  Your test classes will inherit from MiniTest::Rails::Spec (or Model, or
+  Controller, etc) and you can use the MiniTest::Spec DSL. You can generate
+  test files with the standard model, controller, scaffold, and other
+  generators:
   </p>
   <pre>
       rails generate model User