Setup for rerunning rspec failures

.gitignore

@@ -3,6 +3,7 @@
 /config/deploy/staging.rb
 /config/deploy/production.rb
 .byebug_history
+.rspec-failures
 
 .DS_Store
 /.bundle
@@ -20,5 +21,6 @@
 # Ignore encrypted secrets key file.
 config/secrets.yml.key
 config/secrets.yml.enc
+
 *.sql
 /lab

README.md

@@ -105,10 +105,13 @@ Note: Installation of Chrome, ChromeDriver and Selenium are currently not provid
 Run the test cases in the projects root directory in your Vagrant box:
 
 ```shell
-$ bundle exec rspec --exclude-pattern ./spec/unit/extra_contribution_cost_spec.rb --exclude-pattern ./spec/unit/family_and_emergency_home_cost_spec.rb --exclude-pattern ./spec/features/placements_spec.rb
-$ bundle exec rspec ./spec/unit/extra_contribution_cost_spec.rb ./spec/unit/family_and_emergency_home_cost_spec.rb ./spec/features/placements_spec.rb
+$ bundle exec rspec
+```
+Currently, if some tests fail, you may want to execute a second run as you see above. This is because an rspec order issue that hasn't been tracked down yet.
+
+```shell
+$ bundle exec rspec --only-failures
 ```
-Currently, rspec must be executed in two separate runs as you see above. This is because an rspec order issue that hasn't been tracked down yet.
 
 Note that the environment used for RSpec is `local_test`.
 

spec/rails_helper.rb

@@ -77,6 +77,8 @@
 
   config.order = :random
 
+  config.example_status_persistence_file_path = '.rspec-failures'
+
   # From old spec_helper
   config.expect_with :rspec do |expectations|
     # This option will default to `true` in RSpec 4. It makes the `description`