add copy for configspec
review
Merge pull request #32 from sonots/append

add append command
Bump up version
ssh copy_file
Merge pull request #33 from sonots/ssh_copy_file

ssh copy_file
Bump up version
Avoid using grep and awk during OS detection
Merge pull request #34 from hanazuki/detectos-debian

Avoid using grep and awk during OS detection
Bump up version
Implement Docker backend
Merge pull request #35 from hanazuki/docker-backend

Implement Docker backend
Bump up version
Use iptables-save instead of iptables -S because RedHat 5 iptables does not have -S option
Merge pull request #36 from serverspec/change-iptables

Also use iptables-save
Bump up version
Move spec/backend/exec/build_command_spec.rb from serverspec
Fix Rakefile so that specs for backends are tested in isolated environments
Merge pull request #38 from hanazuki/move-backend-test

Move backend test