Please state dependencies for the project?

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Installed via git
2.  Read the readme. Found dependency on Ruby
3. Tried to update as suggested

What is the expected output? What do you see instead?

]# gem update --system
Updating rubygems-update
Fetching: rubygems-update-2.2.2.gem (100%)
Successfully installed rubygems-update-2.2.2
Parsing documentation for rubygems-update-2.2.2
Installing ri documentation for rubygems-update-2.2.2
Installing darkfish documentation for rubygems-update-2.2.2
Done installing documentation for rubygems-update after 3 seconds
Installing RubyGems 2.2.2
RubyGems 2.2.2 installed
/usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_re
quire.rb:55:in `require': cannot load such file -- json/pure (LoadError)
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/json-1.7.7/lib/json.rb:60:in `rescue in <module:JSON>'
    from /usr/share/gems/gems/json-1.7.7/lib/json.rb:57:in `<module:JSON>'
    from /usr/share/gems/gems/json-1.7.7/lib/json.rb:54:in `<top (required)>'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/text.rb:16:in `<top (required)>'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/code_object.rb:28:in `<class:CodeObject>'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/code_object.rb:26:in `<top (required)>'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/generator/markup.rb:59:in `<top (required)>'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/generator/darkfish.rb:6:in `<top (required)>'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/rdoc.rb:565:in `<top (required)>'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/rubygems_hook.rb:73:in `load_rdoc'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/rubygems_hook.rb:238:in `setup'
    from /usr/share/gems/gems/rdoc-4.0.1/lib/rdoc/rubygems_hook.rb:151:in `generate'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/commands/setup_command.rb:317:in `install_rdoc'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/commands/setup_command.rb:148:in `execute'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/command.rb:305:in `invoke_with_build_args'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/command_manager.rb:167:in `process_args'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/command_manager.rb:137:in `run'
    from /usr/local/share/gems/gems/rubygems-update-2.2.2/lib/rubygems/gem_runner.rb:54:in `run'
    from setup.rb:45:in `<main>'

What version of the product are you using? On what operating system?
None as yet.
On linux, Fedora 20, 64bit

Please provide any additional information below.
Please state requirement / depends on ruby / sCCS?

Original issue reported on code.google.com by dave.pawson@gmail.com on 24 Apr 2014 at 9:49