upgrade to rails 3.1.0.rc4, remove call to deprecated method

Gemfile

@@ -1,5 +1,5 @@
 source 'http://rubygems.org'
-gem 'rails', :git => "https://github.com/rails/rails.git"
+gem 'rails', "~> 3.1.0.rc4"
 gem "sqlite3-ruby", "~> 1.3.1", :require => 'sqlite3'
 gem "arel", :git => "git://github.com/rails/arel.git"
 gemspec

lib/seed-fu/seeder.rb

@@ -64,7 +64,7 @@ def seed_record(data)
 
         puts " - #{@model_class} #{data.inspect}" unless @options[:quiet]
 
-        record.send(:attributes=, data, false)
+        record.send(:assign_attributes, data,  :without_protection => true)
         record.save(:validate => false) || raise(ActiveRecord::RecordNotSaved)
         record
       end

seed-fu.gemspec

@@ -14,8 +14,8 @@ Gem::Specification.new do |s|
   s.summary     = "Easily manage seed data in your Active Record application"
   s.description = "Seed Fu is an attempt to once and for all solve the problem of inserting and maintaining seed data in a database. It uses a variety of techniques gathered from various places around the web and combines them to create what is hopefully the most robust seed data system around."
 
-  s.add_dependency "activerecord", "~> 3.1.0.beta"
-  s.add_dependency "activesupport", "~> 3.1.0.beta"
+  s.add_dependency "activerecord", "~> 3.1.0.rc4"
+  s.add_dependency "activesupport", "~> 3.1.0.rc4"
 
   s.add_development_dependency "rspec", "~> 2.0"
   s.add_development_dependency "pg"