Remove reference to ActiveSupport callback.

README.md

@@ -92,15 +92,7 @@ rake db:migrate
 
 ### Without Rails
 
-If you want to use Gutentag outside of Rails, you can. However, there are two caveats:
-
-* You'll want to invoke this code once ActiveRecord's connected to the database:
-
-```ruby
-ActiveSupport.run_load_hooks :gutentag
-```
-
-* And you'll want to set up your database with the same schema (as importing in the migrations isn't possible without Rails). The schema from 0.7.0 onwards is below:
+If you want to use Gutentag outside of Rails, you can. However, there is one caveat: You'll want to set up your database with the same schema (as importing in the migrations isn't possible without Rails). The schema from 0.7.0 onwards is below:
 
 ```Ruby
 create_table :gutentag_taggings do |t|