rails serverを実行するとエラーが出る

第1章 ゼロからデプロイまで | Rails チュートリアル
http://railstutorial.jp/chapters/beginning?version=4.0

これの「1.2.5 rails server」まで進んだところでエラーの山が。
http://railstutorial.jp/chapters/beginning?version=4.0#sec-rails_server

C:\RailsProjects\first_app>rails s
=> Booting WEBrick
=> Rails 4.0.5 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
C:/RailsProjects/first_app/config/environments/development.rb:2:in `<top (required)>': undefined method `configure' for #<FirstApp::Application:0x418b210> (NoMethodError)
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `require'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `block in require'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:214:in `load_dependency'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/dependencies.rb:229:in `require'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/engine.rb:591:in `block (2 levels) in <class:Engine>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/engine.rb:590:in `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/engine.rb:590:in `block in <class:Engine>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `instance_exec'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `run'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:55:in `block in run_initializers'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:210:in `block (2 levels) in each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:209:in `block in each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:44:in `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:44:in `tsort_each_child'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:203:in `each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:54:in `run_initializers'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/application.rb:215:in `initialize!'
        from C:/RailsProjects/first_app/config/environment.rb:7:in `<top (required)>'
        from C:/RailsProjects/first_app/config.ru:3:in `require'
        from C:/RailsProjects/first_app/config.ru:3:in `block in <main>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:55:in `instance_eval'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:55:in `initialize'
        from C:/RailsProjects/first_app/config.ru:in `new'
        from C:/RailsProjects/first_app/config.ru:in `<main>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:49:in `eval'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:49:in `new_from_string'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:40:in `parse_file'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:277:in `build_app_and_options_from_config'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:199:in `app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands/server.rb:48:in `app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:314:in `wrapped_app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands/server.rb:75:in `start'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:76:in `block in <top (required)>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:71:in `tap'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:71:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

調べたら以下の対策で解決できた。
1. 「./config/environment/development.rb」の内容を変更する。

Rails.application.configure do

↓

Your_Rails_Application_Folder_name::Application.configure do

Your_Rails_Application_Folder_nameは「first_app」なら「FirstApp」にするらしい。

上の対策だけだとまだエラーが出る。

C:\RailsProjects\first_app>rails s
=> Booting WEBrick
=> Rails 4.0.5 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/core_ext/time/zones.rb:68:in `rescue in find_zone!': uninitialized constant TZInfo::Inva
lidTimezoneIdentifier (NameError)
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/core_ext/time/zones.rb:53:in `find_zone!'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.5/lib/active_support/railtie.rb:20:in `block in <class:Railtie>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `instance_exec'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:30:in `run'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:55:in `block in run_initializers'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/initializable.rb:54:in `run_initializers'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/application.rb:215:in `initialize!'
        from C:/RailsProjects/first_app/config/environment.rb:7:in `<top (required)>'
        from C:/RailsProjects/first_app/config.ru:3:in `require'
        from C:/RailsProjects/first_app/config.ru:3:in `block in <main>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:55:in `instance_eval'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:55:in `initialize'
        from C:/RailsProjects/first_app/config.ru:in `new'
        from C:/RailsProjects/first_app/config.ru:in `<main>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:49:in `eval'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:49:in `new_from_string'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/builder.rb:40:in `parse_file'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:277:in `build_app_and_options_from_config'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:199:in `app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands/server.rb:48:in `app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rack-1.5.3/lib/rack/server.rb:314:in `wrapped_app'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands/server.rb:75:in `start'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:76:in `block in <top (required)>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:71:in `tap'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/railties-4.0.5/lib/rails/commands.rb:71:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

2.「./config/environment.rb」に以下を「Rails.application.initialize!」より上に追記する。

require 'tzinfo'

これで無事実行できた。

C:\RailsProjects\first_app>rails s
=> Booting WEBrick
=> Rails 4.0.5 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2015-05-19 16:07:39] INFO  WEBrick 1.3.1
[2015-05-19 16:07:39] INFO  ruby 2.0.0 (2014-11-13) [i386-mingw32]
[2015-05-19 16:07:39] INFO  WEBrick::HTTPServer#start: pid=724 port=3000

参考：
rails server実行時にエラーがでて起動しない時の解決方法 - Qiita
http://qiita.com/244mix/items/d74c10e1496811a19d2b

activesupport - Uninitialized Constant TZInfo::InvalidTimezoneIdentifier (NameError) - Rails 4 - Stack Overflow
http://stackoverflow.com/questions/20713472/uninitialized-constant-tzinfoinvalidtimezoneidentifier-nameerror-rails-4