Fix up dependencies for the example app.

We need the rails controller testing gem to be able to test the sample
app. We also don't want it to run web console at all.

Author: Sam Phippen

example_app_generator/generate_app.rb

@@ -14,6 +14,11 @@
   # Remove the existing rails version so we can properly use master or other
   # edge branches
   gsub_file 'Gemfile', /^.*\bgem 'rails.*$/, ''
+  gsub_file "Gemfile", /.*web-console.*/, ''
+
+  if Rails::VERSION::STRING >= '5.0.0'
+    append_to_file('Gemfile', "gem 'rails-controller-testing', :git => 'https://github.com/rails/rails-controller-testing'")
+  end
 
   # Use our version of RSpec and Rails
   append_to_file 'Gemfile', <<-EOT.gsub(/^ +\|/, '')