Merge branch 'master' into develop
0.1.1git
not destroy VMs on test end
fix wrong in README. s/:via/:run_method/
update README
duplicate options before calling destructive methods
preserve original mode/owner/group if they are specified as :preserve.
support directory transfer via `transfer_if_modified`
Merge branch 'support-transfering-directory' into develop
fix problem in option handling in install_if_modified.
release 0.1.1

* support directory transfer in `transfer_if_modified`
* fix problem in option handling in `install_if_modified`
* preserve original mode/owner/group if `:preserve' keyword was given
Merge branch 'release-0.1.1'