ipaddress LoadError #1
Description
I've just installed this gem but I got following error.
% gem install rhosts
Fetching: ipaddress-0.8.0.gem (100%)
Successfully installed ipaddress-0.8.0
Fetching: rhosts-0.0.1.gem (100%)
Successfully installed rhosts-0.0.1
Parsing documentation for ipaddress-0.8.0
Installing ri documentation for ipaddress-0.8.0
Parsing documentation for rhosts-0.0.1
Installing ri documentation for rhosts-0.0.1
Done installing documentation for ipaddress, rhosts after 0 seconds
2 gems installed
% rhosts
/home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/filer.rb:1:in `require': cannot load such file -- ipaddress (LoadError)
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/filer.rb:1:in `<top (required)>'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/commands/console.rb:2:in `require'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/commands/console.rb:2:in `<top (required)>'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/cli.rb:6:in `require'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/lib/rhosts/cli.rb:6:in `<top (required)>'
from /home/muratayusuke/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from /home/muratayusuke/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/gems/rhosts-0.0.1/bin/rhosts:6:in `<top (required)>'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/bin/rhosts:23:in `load'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/bin/rhosts:23:in `<main>'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `eval'
from /home/muratayusuke/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `<main>'