fix method name: not 'create_index' but 'add_index'

Signed-off-by: rick <technoweenie@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/acts_as_versioned.rb b/lib/acts_as_versioned.rb
index 2e7a40d9b..9660f2ad6 100644
--- a/lib/acts_as_versioned.rb
+++ b/lib/acts_as_versioned.rb
@@ -440,7 +440,7 @@ module ActiveRecord #:nodoc:
               self.connection.add_column versioned_table_name, :updated_at, :timestamp
             end
             
-            self.connection.create_index versioned_table_name, versioned_foreign_key
+            self.connection.add_index versioned_table_name, versioned_foreign_key
           end
 
           # Rake migration task to drop the versioned table
@@ -489,4 +489,4 @@ module ActiveRecord #:nodoc:
   end
 end
 
-ActiveRecord::Base.send :include, ActiveRecord::Acts::Versioned
\ No newline at end of file
+ActiveRecord::Base.send :include, ActiveRecord::Acts::Versioned