Fix functionality with Rails 3.2 time_zone_select helper

[jaredmoody]

Use erb to drop in the ActiveSupport mappings so that we can properly
select the value from the helper.

[hayksaakian]

please merge pull request. the plugin doesn't seem to work on the latest 3.2 as it is.

[bmorrison]

Many thanks for this. gem 'detect_timezone_rails', :git => 'https://github.com/elevation/detect_timezone_rails' and all was well.

[chrisdpeters]

I tried using the source at https://github.com/elevation/detect_timezone_rails, but I get this error when running rake assets:precompile:

rake aborted!
undefined method `tzinfo' for nil:NilClass
  (in /Users/cpeters/.rvm/gems/ruby-1.9.3-p125/bundler/gems/detect_timezone_rails-ba752d91669c/vendor/assets/javascripts/jquery.detect_timezone.js.erb)
/Users/cpeters/.rvm/gems/ruby-1.9.3-p125/bundler/gems/detect_timezone_rails-ba752d91669c/vendor/assets/javascripts/jquery.detect_timezone.js.erb:34:in `block in singletonclass'
/Users/cpeters/.rvm/gems/ruby-1.9.3-p125/bundler/gems/detect_timezone_rails-ba752d91669c/vendor/assets/javascripts/jquery.detect_timezone.js.erb:65530:in `instance_eval'
/Users/cpeters/.rvm/gems/ruby-1.9.3-p125/bundler/gems/detect_timezone_rails-ba752d91669c/vendor/assets/javascripts/jquery.detect_timezone.js.erb:65530:in `singletonclass'
/Users/cpeters/.rvm/gems/ruby-1.9.3-p125/bundler/gems/detect_timezone_rails-ba752d91669c/vendor/assets/javascripts/jquery.detect_timezone.js.erb:65528:in `__tilt_70298514971360'

Using Rails 3.2.13.

[chrisdpeters]

P.S. I was able to resolve by referencing the commit prior to the latest:

gem "detect_timezone_rails", github: "elevation/detect_timezone_rails", ref: "367557636e33549e318e6e89c7323791af4afb56"

[hayksaakian]

Thanks for the tip @chrisdpeters