README.rdoc in mm-attach-it-0.1.5 vs README.rdoc in mm-attach-it-0.2.0

@@ -8,9 +8,13 @@
 
 Or add it to your Rails’s Gemfile::
 
   gem "mm-attach-it"
 
+If you are using Mongo Mapper 0.8.x or later
+
+  gem "mm-attach-it", "~> 0.1.5"
+
 == Usage
 
 === Model
 
 Declare the plugin and use the attachment method to make attachments.