added some matcher
Modified be_user, be_group
Merge remote-tracking branch 'pr/3/head' and make some fixes
Use Net::SSH instead of ssh command
Merge branch 'net-ssh' and increment version
Change default value of ret

For easy error handling
sudo support
Add some dependencies to gemspec
Merge branch 'sudo' and increment version
Merge pull request #6 from makimoto/dependencies

Add some dependencies to gemspec
support Solaris
Merge pull request #7 from ftnk/add-solaris-support

support Solaris
Bump up version