title: rspec --init not working/ `mkd ir': Invalid argument - ./C: (Errno::EINVAL)
body: <p>I'm following codeschool's <a href="http://rspec.codeschool.com/levels/1" rel="nofollow">class on rspec</a>. Installing worked fine. I made a file called rspec-zombie for the project. Fine. But when I tried rspec --init in powershell, I got an unholy error message. I'm under the impression there are supposed to be some files made inside the directory, which aren't there. It follows.</p>
  
  <pre><code>C:\Users\Roman\The-Odin-Project\rspec-zombie&gt; rspec --init
    create   .rspec
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-support-3.1.0/lib/rspec/support/directory_maker.rb:17:in `mkd
  ir': Invalid argument - ./C: (Errno::EINVAL)
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-support-3.1.0/lib/rspec/support/directory_maker.
  rb:17:in `block in mkdir_p'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-support-3.1.0/lib/rspec/support/directory_maker.
  rb:13:in `each'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-support-3.1.0/lib/rspec/support/directory_maker.
  rb:13:in `mkdir_p'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/project_initializer.rb
  :33:in `copy_template'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/project_initializer.rb
  :22:in `run'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/option_parser.rb:81:in
   `block (2 levels) in parser'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1360:in `call'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1360:in `block in parse_in_order'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1347:in `catch'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1347:in `parse_in_order'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1341:in `order!'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1432:in `permute!'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/optparse.rb:1453:in `parse!'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/option_parser.rb:16:in
   `parse'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/option_parser.rb:8:in
  `parse'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/configuration_options.
  rb:120:in `command_line_options'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/configuration_options.
  rb:154:in `custom_options_file'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/configuration_options.
  rb:112:in `file_options'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/configuration_options.
  rb:44:in `organize_options'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/configuration_options.
  rb:14:in `initialize'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/runner.rb:58:in `new'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/runner.rb:58:in `run'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/lib/rspec/core/runner.rb:37:in `invok
  e'
          from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rspec-core-3.1.3/exe/rspec:4:in `&lt;top (required)&gt;'
          from C:/RailsInstaller/Ruby1.9.3/bin/rspec:23:in `load'
          from C:/RailsInstaller/Ruby1.9.3/bin/rspec:23:in `&lt;main&gt;'
  </code></pre>