README.md in lhm-1.0.0.rc.1 vs README.md in lhm-1.0.0.rc2

@@ -40,14 +40,14 @@
 twitter solution [1], it does not require the presence of an indexed
 `updated_at` column.
 
 ## Usage
 
-After including Lhm, `hadron_change_table` becomes available
+After extending Lhm, `hadron_change_table` becomes available
 with the following methods:
 
     class MigrateArbitrary < ActiveRecord::Migration
-      include Lhm
+      extend Lhm
 
       def self.up
         hadron_change_table(:users) do |t|
           t.add_column(:arbitrary, "INT(12)")
           t.add_index([:arbitrary, :created_at])