not working on windows
irb(main):001:0> require 'pcap_tools'
LoadError: cannot load such file -- C:/Ruby200/lib/ruby/gems/2.0.0/gems/popen4-0
.1.2/lib/open3
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
require' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/popen4-0.1.2/lib/popen4.rb:10:i
n <top (required)>' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
require' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/pcap_tools-0.0.7/lib/pcap_tools /loader.rb:1:in<top (required)>'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/pcap_tools-0.0.7/lib/pcap_tools
.rb:4:in require_relative' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/pcap_tools-0.0.7/lib/pcap_tools .rb:4:in<top (required)>'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:i
n require' from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:i nrescue in require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:144:i
n require' from (irb):1 from C:/Ruby200/bin/irb:12:in>' from (irb):2 from C:/Ruby200/bin/irb:12:in