Bump Rails version to 5.0.0.beta2

.travis.yml

@@ -16,6 +16,8 @@ matrix:
       env: "RAILS_VERSION=4.2.5"
     - rvm: 2.2.4
       env: "RAILS_VERSION=4.2.5"
+    - rvm: 2.3.0
+      env: "RAILS_VERSION=5.0.0.beta2"
     - rvm: jruby-9.0.4.0
       env: "RAILS_VERSION=4.2.5 JRUBY_OPTS=\"-J-Xms512m -J-Xmx1024m\""
   allow_failures:

spec/test_app_templates/Gemfile.extra

@@ -1,7 +1,6 @@
 
 if ENV['RAILS_VERSION'] =~ /^5\.0/ || ENV['RAILS_VERSION'] == 'edge'
   gem 'rails-controller-testing', github: 'rails/rails-controller-testing'
-  gem 'capybara', github: 'jnicklas/capybara' # we need 2.6.0 to be released
   gem 'rspec-mocks', github: 'rspec/rspec-mocks' # we need 3.5.0 to be released
   gem 'rspec-expectations', github: 'rspec/rspec-expectations' # we need 3.5.0 to be released
   gem 'rspec-support', github: 'rspec/rspec-support' # we need 3.5.0 to be released
@@ -10,5 +9,4 @@ if ENV['RAILS_VERSION'] =~ /^5\.0/ || ENV['RAILS_VERSION'] == 'edge'
   gem 'rspec-rails', github: 'rspec/rspec-rails' # we need 3.5.0 to be released
   gem 'kaminari', github: 'amatsuda/kaminari' # need > 0.16.3
   gem 'deprecation', github: 'jcoyne/deprecation', branch: 'no_alias_method_chain'
-  gem 'turbolinks', github: 'basecamp/turbolinks', branch: 'v5' # need >= 5.0.0
 end