Adjust language in README for abstract class declaration; rename key assignment appropriately for PaperTrail.enabled_for_model

README.md

@@ -553,7 +553,7 @@ Alternatively you could store certain metadata for one type of version, and othe
 
 If you only use custom version classes and don't use PaperTrail's built-in one, on Rails `>= 3.2` you must:
 
-- either declare PaperTrail's version class abstract like this (in `config/initializers/paper_trail_patch.rb`):
+- either declare the `PaperTrail::Version` class to be abstract like this (in an initializer):
 
 ```ruby
 PaperTrail::Version.module_eval do

lib/paper_trail.rb

@@ -34,12 +34,12 @@ module PaperTrail
 
   # Sets whether PaperTrail is enabled or disabled for this model in the current request.
   def self.enabled_for_model(model, value)
-    paper_trail_store[:"request_enabled_for_#{model}"] = value
+    paper_trail_store[:"enabled_for_#{model}"] = value
   end
 
   # Returns `true` if PaperTrail is enabled for this model in the current request, `false` otherwise.
   def self.enabled_for_model?(model)
-    !!paper_trail_store.fetch(:"request_enabled_for_#{model}", true)
+    !!paper_trail_store.fetch(:"enabled_for_#{model}", true)
   end
 
   # Set the field which records when a version was created.