title: Error when execute rails generate scaffold User name:string email:string
body: <p>I am completely newby in Ruby and I am following the tutorial made by Michael Hartl.
  In Chapter 2, Page 49, the book indicates:</p>
  
  <pre><code>rails generate scaffold User name:string email:string
  </code></pre>
  
  <p>After execute this, the application shows:</p>
  
  <pre><code>    C:\demo_app&gt;rails generate scaffold User name:string email:string
  C:/demo_app/config/environments/development.rb:1:in `&lt;top (required)&gt;': undefine
  d method `configure' for #&lt;DemoApp::Application:0x35d3d98&gt; (NoMethodError)
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
  3.2.3/lib/active_support/dependencies.rb:251:in `require'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
  3.2.3/lib/active_support/dependencies.rb:251:in `block in require'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
  3.2.3/lib/active_support/dependencies.rb:236:in `load_dependency'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
  3.2.3/lib/active_support/dependencies.rb:251:in `require'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/engine.rb:571:in `block in &lt;class:Engine&gt;'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/initializable.rb:30:in `instance_exec'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/initializable.rb:30:in `run'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/initializable.rb:55:in `block in run_initializers'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/initializable.rb:54:in `each'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/initializable.rb:54:in `run_initializers'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/application.rb:136:in `initialize!'
          from C:/demo_app/config/environment.rb:5:in `&lt;top (required)&gt;'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/application.rb:103:in `require'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/application.rb:103:in `require_environment!'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3
  /lib/rails/commands.rb:25:in `&lt;top (required)&gt;'
          from bin/rails:4:in `require'
          from bin/rails:4:in `&lt;main&gt;'
  </code></pre>
  
  <p>I have already use bundle install, bundle update, installed new (and old) version of gems... 
  Could someone oriented me about what is wrong?
  Or a way to avoid this mistake in order to follow with the next steps.</p>
  
  <p>Thanks,</p>