RubyGems nicovideo ニコニコ動画

Linux Gentoo Ruby 
$ gem search --remote nicovideo                                                                                                             
*** REMOTE GEMS ***
nicovideo (0.1.1, 0.1.0, 0.0.6, 0.0.5, 0.0.4, 0.0.3, 0.0.2, 0.0.1)
    utils for nicovideo
$ sudo emacs /etc/portage/package.keywords
 #dev-lang/ruby ~x86
   dev-ruby/mechanize ~x86  # required by $ gem install nicovideo
    dev-ruby/hpricot ~x86
$ sudo emerge -av dev-ruby/mechanize
$ gem install nicovideo
$ emacs ~/.nicovideo/account.yml
  mail: "Your E-MailAddress"
  password: "Your PassWord"