インストールログはこのような感じ。 C:\Ruby23>gem install selenium-webdriver Fetching: rubyzip-1.2.0.gem (100%) Successfully installed rubyzip-1.2.0 Fetching: ffi-1.9.13-x86-mingw32.gem (100%) Successfully installed ffi-1.9.13-x86-mingw32 Fetching: childprocess-0.5.9.gem (100%) Successfully installed childprocess-0.5.9 Fetching: websocket-1.2.3.gem (100%) Successfully installed websocket-1.2.3 Fetching: selenium-we
