Migrate from deprecated 'scoped' method to 'all'

devise-kerberos-authenticatable.gemspec

@@ -2,7 +2,7 @@ require 'rake'
 
 Gem::Specification.new do |s|
   s.name            = 'devise-kerberos-authenticatable'
-  s.version         = '0.1.2'
+  s.version         = '0.1.3'
   s.date            = '2015-06-23'
   s.summary         = 'Devise authentication strategy for Kerberos'
   s.description     = 'Devise extension providing the ability to authenticate

lib/devise_kerberos_authenticatable/model.rb

@@ -23,7 +23,7 @@ module Devise
         def authenticate_with_kerberos(attributes = {})
           return nil unless attributes[:username].present?
 
-          resource = scoped.where(:username => attributes['username']).first
+          resource = all.where(:username => attributes['username']).first
 
           if resource.blank?
             resource = new