Test setup

Install Gems
```
group :development, :test do 
  gem 'rspec-rails', '~> 3.0.0'
  gem 'factory_girl_rails'
  gem 'faker'
  gem 'pry'
  gem 'database_cleaner'
  gem 'shoulda-matchers', require: false
end
```

Configure spec_helper.rb and remove warnings from .rspec