Merge pull request #9 from matsuu/support-gentoo

Support some Gentoo family OS
Bump up version
Update README.md
Update README.md
Update the part of multi OS
Support be_mode
Merge pull request #10 from mizzy/be_mode

Support be_mode
Support be_owned_by
Merge pull request #11 from mizzy/be_owned_by

Support be_owned_by
Support be_grouped_into
Merge pull request #12 from mizzy/be_grouped_into

Support be_grouped_into
Bump up version
check_group is dupilicated
Add udp support for be_listening.(only commands/base)
Bump up version
fix typo
Support have_cron_entry matcher
Merge pull request #14 from mizzy/have_cron_entry

Support have_cron_entry matcher
Bump up version
Remove debug code