title: uninitialized constant Capybara (NameError) running RoR tests
body: <p>in my spec_helper.rb, I have:</p>
  
  <pre><code>RSpec.configure do |config|
    config.include Capybara::DSL
  </code></pre>
  
  <p>Then I am running:</p>
  
  <pre><code>bundle exec rspec spec/requests/static_pages_spec.rb
  
  ******-C02MGBVJFD57:myapp ********$ bundle exec rspec spec/requests/static_pages_spec.rb
  /Users/*********/workspace/myapp/spec/spec_helper.rb:18:in `block in &lt;top (required)&gt;': uninitialized constant Capybara (NameError)
  </code></pre>
  
  <p>Why am I getting this error, and how do I fix it? Thank you</p>