title: Rails bundler doesn't install gems inside a group
body: <p>I have several gems including ruby-debug in a bundler group called :development. When I run the bundle command, these gems are ignored and it only installs the gems that are not in any group. How can I make sure bundler doesn't ignore the gems in the :development group? </p>
  
  <p>Edit: This is what my Gemfile looks like.</p>
  
  <pre><code>source 'http://rubygems.org'
  gem 'rails', '3.0.1'
  
  # Auth gems
  gem "devise", "1.1.3"
  gem "omniauth"
  
  # Bundle Mongoid gems
  gem "mongoid", "2.0.0.beta.19"
  gem "bson_ext"
  
  # Asset gems
  gem 'jquery-rails'
  gem "jammit"
  
  # Controller gems
  gem 'inherited_resources', '1.1.2'
  
  # View gems
  gem 'haml'
  gem 'formtastic', '~&gt; 1.1.0'
  
  # Nokogiri
  gem "mechanize"
  gem "json"
  
  
  group :development do
    gem "ruby-debug"
    gem 'compass'
    gem 'compass-colors'
    gem 'pickler'
    gem 'haml-rails'
    gem 'rails3-generators'
    gem "hpricot"
    gem "ruby_parser"
    gem 'fog'
  end
  </code></pre>