README.md in g2_command-3.1.0 vs README.md in g2_command-3.2.0

@@ -20,9 +20,33 @@
 
 ## Usage
 
 TODO: Write usage instructions here
 
+## RSpec Helper
+
+In `spec_helper.rb`:
+
+```ruby
+require 'command/test_helper'
+
+RSpec.configure do |config|
+  config.include Command::TestHelper
+end
+```
+
+Create a Success outcome object:
+
+```ruby
+  let(:outcome) { create_outcome(value: 'Return value') }
+```
+
+Create a Failure outcome object:
+
+```ruby
+  let(:outcome) { create_outcome(errors: { user: 'is invalid' }) }
+```
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).