Merge pull request #17773 from gsamokovarov/mention-web-console-2.0-rc1

Use web_console 2.0 for 4.2.0.rc1 release

guides/source/upgrading_ruby_on_rails.md

@@ -52,7 +52,7 @@ Upgrading from Rails 4.1 to Rails 4.2
 
 ### Web Console
 
-First, add `gem 'web-console', '~> 2.0.0.beta4'` to the `:development` group in your Gemfile and run `bundle install` (it won't have been included when you upgraded Rails). Once it's been installed, you can simply drop a reference to the console helper (i.e., `<%= console %>`) into any view you want to enable it for. A console will also be provided on any error page you view in your development environment.
+First, add `gem 'web-console', '~> 2.0'` to the `:development` group in your Gemfile and run `bundle install` (it won't have been included when you upgraded Rails). Once it's been installed, you can simply drop a reference to the console helper (i.e., `<%= console %>`) into any view you want to enable it for. A console will also be provided on any error page you view in your development environment.
 
 ### Responders
 

railties/lib/rails/generators/rails/app/templates/Gemfile

@@ -32,7 +32,7 @@ group :development, :test do
   <%- end -%>
 
   # Access an IRB console on exception pages or by using <%%= console %> in views
-  gem 'web-console', '~> 2.0.0.beta4'
+  gem 'web-console', '~> 2.0'
 <%- if spring_install? %>
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'