Revert "adjust simple_form version for older rails"

This reverts commit 86517bc.

Gemfile.rails_version

@@ -11,19 +11,17 @@ when "default"
   gem "rails", "~> 4.0.0"
   # A JS runtime is required for Rails 4.0+
   gem 'therubyracer', platforms: :ruby
-  gem 'simple_form', '3.1.0.rc1'
 when /^3.2/
   gem "rails", "~> #{env_rails_version}"
   # A JS runtime is required for Rails 3.1+
   gem 'therubyracer', '~> 0.12.1'
   gem 'strong_parameters'
-  gem 'simple_form', '~> 2.1.1'
 when /^4.0/
   gem "rails", "~> #{env_rails_version}"
   # A JS runtime is required for Rails 4.0+
   gem 'therubyracer', platforms: :ruby
-  gem 'simple_form', '3.1.0.rc1'
 else
   fail "Unsupported Rails version #{ENV['RAILS_VERSION']}"
 end
 
+gem 'simple_form', '3.1.0.rc1'

surveyor.gemspec

@@ -20,6 +20,7 @@ Gem::Specification.new do |s|
   s.add_dependency('rails', '>= 3.2')
   s.add_dependency('haml', '~> 4.0')
   s.add_dependency('sass')
+  s.add_dependency('simple_form', '3.1.0.rc1')
   s.add_dependency('uuidtools', '~> 2.1')
   s.add_dependency('mustache', '~> 0.99')
   s.add_dependency('rabl', '~> 0.6')