title: Can't install RSpec on Rails 5 - Could not find generator 'rspec:install'
body: <p>My Gemfile has the following:</p>
  
  <pre><code>source 'https://rubygems.org'
  ruby '2.3.1'
  
  gem 'rails', '&gt;= 5.0.0.rc2', '&lt; 5.1'
  
  ... more gems
  
  group :development, :test do
    gem 'rspec-rails', '~&gt; 3.5'
    gem 'factory_girl_rails', '~&gt; 4.7'
    gem 'byebug'
  
  end
  
  group :test do
    gem 'faker', '~&gt; 1.6', '&gt;= 1.6.3'
    gem 'capybara', '~&gt; 2.7', '&gt;= 2.7.1'
    gem 'database_cleaner', '~&gt; 1.5', '&gt;= 1.5.3'
    gem 'launchy', '~&gt; 2.4', '&gt;= 2.4.3'
    gem 'selenium-webdriver', '~&gt; 2.53', '&gt;= 2.53.4'
    gem 'shoulda-matchers', '~&gt; 3.1', '&gt;= 3.1.1'
  
  
  end
  </code></pre>
  
  <p>When I run rails generate rspec install, I get </p>
  
  <pre><code>Expected string default value for '--helper'; got true (boolean)
  Expected string default value for '--assets'; got true (boolean)
  Expected string default value for '--decorator'; got true (boolean)
  Expected string default value for '--decorator'; got true (boolean)
  Expected string default value for '--jbuilder'; got true (boolean)
  Expected boolean default value for '--markerb'; got :erb (string)
  Could not find generator 'rspec:install'. Maybe you meant 'devise:install', 'pundit:install' or 'responders:install'
  Run `rails generate --help` for more options.
  </code></pre>
  
  <p>rails generate --help shows no rspec install </p>
  
  <pre><code>Rspec:
    rspec:decorator
    rspec:policy
  </code></pre>
  
  <p>my gem list rspec shows..
  <strong>* LOCAL GEMS *</strong></p>
  
  <pre><code>rspec (3.5.0)
  rspec-core (3.5.4)
  rspec-expectations (3.5.0)
  rspec-mocks (3.5.0)
  rspec-support (3.5.0)
  </code></pre>
  
  <p>I can't seem to install rspec. Is there something I need to do differently?</p>