Support handle sudo password
Merge remote-tracking branch 'pr/51/head'
on_data callback is already registered, so this block is not needed.
Include c.sudo_password = ENV['SUDO_PASSWORD'] in default spec_helper
Bump up version
add have_ipfilter_rule matcher for Solaris
Merge pull request #52 from ftnk/add-have_ipfilter_rule-matcher

add have_ipfilter_rule matcher for Solaris
Bump up version
add have_ipnat_rule matcher for Solaris
Merge pull request #54 from ftnk/add-have_ipnat_rule-matcher

add have_ipnat_rule matcher for Solaris
add have_svcprop and have_svcprops matcher for Solaris
Merge remote-tracking branch 'pr/55/head'
Add Serverspec::Helper::OSDetect
Bump up version
Add `vendor/` to .gitignore
Merge pull request #57 from kentaro/ignore-vendor

Add `vendor/` to .gitignore
backend can take specific commands object

backend.check_os cause infinite loop with Serverspec::Helper::OSDetect
Add check_os method
Rename OSDetect to DetectOS
Modify spec_helper to use DetectOS helper