Works for me:

    $ bundle install --deployment
    Fetching gem metadata from http://rubygems.org/.........
    Fetching additional metadata from http://rubygems.org/..
    Installing ffi 1.9.3
    Installing childprocess 0.5.2
    Installing builder 3.2.2
    Installing diff-lcs 1.1.3
    Installing multi_json 1.9.2
    Installing gherkin 2.12.2
    Using json 1.8.1
    Installing tins 1.0.1
    Installing term-ansicolor 1.3.0
    Installing cucumber 0.10.2
    Installing rspec-core 2.6.4
    Installing rspec-expectations 2.6.0
    Installing rspec-mocks 2.6.0
    Installing rspec 2.6.0
    Installing aruba 0.3.6
    Installing celerity 0.9.2
    Installing culerity 0.2.15
    Installing mime-types 2.2
    Installing mini_portile 0.5.3
    Installing nokogiri 1.6.1
    Installing rack 1.5.2
    Installing rack-test 0.6.2
    Installing rubyzip 1.1.2
    Installing websocket 1.0.7
    Installing selenium-webdriver 2.41.0
    Installing xpath 0.1.4
    Installing capybara 0.4.1.2
    Installing capybara-webkit 0.3.0
    Installing chunky_png 1.3.0
    Installing colored 1.2
    Installing oily_png 1.1.1
    Using bundler 1.6.1
    Your bundle is complete!