Add support to Rails 3.2

Gemfile

@@ -1,9 +1,9 @@
-source "http://rubygems.org"
+source :rubygems
 
 gemspec
 
-gem "rake", '0.9.2.2'
-gem "rdoc"
-gem "mocha"
-gem "tzinfo"
-gem "ruby-debug", :platform => :mri_18
+gem 'rake'
+gem 'rdoc'
+gem 'mocha'
+gem 'tzinfo'
+gem 'ruby-debug', :platform => :mri_18

simple_form.gemspec

@@ -20,6 +20,6 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project = "simple_form"
 
-  s.add_dependency('activemodel', '~> 3.0')
-  s.add_dependency('actionpack', '~> 3.0')
+  s.add_dependency('activemodel', '>= 3.0.0.rc', '< 4.0')
+  s.add_dependency('actionpack', '>= 3.0.0.rc', '< 4.0')
 end