Convert from using test-unit to rspec for a dummy application in a gem

0 - scratch.gemspec

  s.add_development_dependency "rspec-rails"

1 - Terminal Window

~/projects/scratch> bundle install
Using rspec-core (2.12.2) 
Using rspec-expectations (2.12.1) 
Using rspec-mocks (2.12.1) 
Using rspec-rails (2.12.0) 
Using scratch (0.0.1) from source at . 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

~/projects/scratch> rspec --init
  create   spec/spec_helper.rb
  create   .rspec

~/projects/scratch> mv test/dummy spec/
~/projects/scratch> rm -rf test

2 - spec_helper.rb

ENV["RAILS_ENV"] = "test"

require File.expand_path("../dummy/config/environment.rb",  __FILE__)
require "rails/test_help"
require '<gemname>'

Rails.backtrace_cleaner.remove_silencers!