FIX: Ruby 2.2 has `include` as private

lib/rate_limiter/on_create_record.rb

@@ -23,18 +23,13 @@ class RateLimiter
 
     def self.included(base)
       base.extend(ClassMethods)
-      base.include(InstanceMethods)
     end
 
-    module InstanceMethods
-
     # For the lifetime of this instance, don't enforce rate limits.
     def disable_rate_limits!
       @rate_limits_disabled = true
     end
 
-    end
-
     module ClassMethods
       def rate_limit(limiter_method=nil)