fix definition when the rubie is a Hash

[sanrodari]

fix definition when the rubie is a Hash

Example

:rbenv => {
  :user_installs => [
    {
      :user   => "vagrant",
      :rubies => [
        {
          :name => '2.1.0',
          :environment => { 'CFLAGS' => '--disable-install-doc --enable-shared' }
        }
      ],
      :global => "2.1.0",
      'gems'  => {
        '2.1.0'    => [
          { 'name'    => 'bundler' }
        ]
      }
    }
  ]
}

Error
Option definition must be a kind of String! You passed {"name"=>"2.1.0"}.

[fnichol]

It looks as though #36 also addresses and fixes this issue. Thank you for submitting and confirming the break!

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.